tab manager multi select mode (#3921)

Task/Issue URL:
https://app.asana.com/0/392891325557410/1209303765372372/f
Tech Design URL:
CC:

**Description**:
Adds UI and menus for multi-tab select.

Minor deviation from Figma - long press menu items are only specific to
the current tap and make more sense.

**Steps to test this PR**:

Phone:

1. Internal user off
3. Go to tab switcher ensure it looks like production 
4. Internal user on
5. Open various combinations of new tabs / web pages, single, and
multiple.
8. Check that long pressing a tab and choosing select tab enters select
mode and selects the tab
9. Tap anywhere on screen to exit select mode
10. Tap anywhere on screen again to go back to previous screen
6. Back in tab switcher tap edit and check menu items
7. Use Select Tabs to enter select mode
8. Check bottom menu and button are enabled when appropriate and show
correct menu items
9. Check long press menu items are appropriate

Repeat test on iPad:

1. Bottom bar (and therefore menu) doesn't exist, check Figma for iPad
details


**Definition of Done (Internal Only)**:

* [x] Does this PR satisfy our [Definition of
Done](https://app.asana.com/0/1202500774821704/1207634633537039/f)?

---------

Co-authored-by: Mariusz Śpiewak <[email protected]>

Author: brindy

DuckDuckGo-iOS.xcodeproj/project.pbxproj

@@ -511,7 +511,6 @@
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 		851DFD8A212C5EE800D95F20 /* TabSwitcherButtonTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = 851DFD89212C5EE800D95F20 /* TabSwitcherButtonTests.swift */; };
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@@ -566,6 +565,8 @@
 		8565A34B1FC8D96B00239327 /* LaunchTabNotification.swift in Sources */ = {isa = PBXBuildFile; fileRef = 8565A34A1FC8D96B00239327 /* LaunchTabNotification.swift */; };
 		8565A34D1FC8DFE400239327 /* LaunchTabNotificationTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = 8565A34C1FC8DFE400239327 /* LaunchTabNotificationTests.swift */; };
 		8567E29D2CF77A700035926F /* MockFireproofing.swift in Sources */ = {isa = PBXBuildFile; fileRef = 85C503FC2CF0E7B10075DF6F /* MockFireproofing.swift */; };
+		8569E1702D52C9A4004A3CB7 /* TabSwitcherBarsStateHandler.swift in Sources */ = {isa = PBXBuildFile; fileRef = 8569E16F2D52C993004A3CB7 /* TabSwitcherBarsStateHandler.swift */; };
+		856F28D72D3EC5FA00A88211 /* TabSwitcherViewController+MultiSelect.swift in Sources */ = {isa = PBXBuildFile; fileRef = 856F28D62D3EC5FA00A88211 /* TabSwitcherViewController+MultiSelect.swift */; };
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 		8572298A2BBEF0C800E2E802 /* AppRatingPrompt_v1 in Resources */ = {isa = PBXBuildFile; fileRef = 857229892BBEF0C800E2E802 /* AppRatingPrompt_v1 */; };
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@@ -1962,7 +1963,6 @@
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 		851DFD86212C39D300D95F20 /* TabSwitcherButton.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = TabSwitcherButton.swift; sourceTree = "<group>"; };
 		851DFD89212C5EE800D95F20 /* TabSwitcherButtonTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = TabSwitcherButtonTests.swift; sourceTree = "<group>"; };
-		851EA0872D39D39600A1A590 /* TabSwitcherTopBarView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = TabSwitcherTopBarView.swift; sourceTree = "<group>"; };
 		85200FA01FBC5BB5001AF290 /* DDGPersistenceContainer.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = DDGPersistenceContainer.swift; sourceTree = "<group>"; };
 		8521FDE4238D411400A44CC3 /* FileStoreTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = FileStoreTests.swift; sourceTree = "<group>"; };
 		852409302C78030D00CB28FC /* MockUsageSegmentation.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = MockUsageSegmentation.swift; sourceTree = "<group>"; };
@@ -2018,6 +2018,8 @@
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 		8565A34A1FC8D96B00239327 /* LaunchTabNotification.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = LaunchTabNotification.swift; sourceTree = "<group>"; };
 		8565A34C1FC8DFE400239327 /* LaunchTabNotificationTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = LaunchTabNotificationTests.swift; sourceTree = "<group>"; };
+		8569E16F2D52C993004A3CB7 /* TabSwitcherBarsStateHandler.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = TabSwitcherBarsStateHandler.swift; sourceTree = "<group>"; };
+		856F28D62D3EC5FA00A88211 /* TabSwitcherViewController+MultiSelect.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "TabSwitcherViewController+MultiSelect.swift"; sourceTree = "<group>"; };
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@@ -6533,16 +6535,17 @@
 		F1386BA21E6846320062FC3C /* TabSwitcher */ = {
 			isa = PBXGroup;
 			children = (
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 				9872D204247DCAC100CEF398 /* TabPreviewsSource.swift */,
 				85DFEDF824CF3D0E00973FE7 /* TabsBarCell.swift */,
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 				6FF9AD3E2CE63DC200C5A406 /* TabSwitcherOpenDailyPixel.swift */,
 				984D035B24AE15CD0066CFB8 /* TabSwitcherSettings.swift */,
-				851EA0872D39D39600A1A590 /* TabSwitcherTopBarView.swift */,
 				F1617C121E572E0300DEDCAF /* TabSwitcherViewController.swift */,
 				85F2FFCE2211F8E5006BB258 /* TabSwitcherViewController+KeyCommands.swift */,
+				856F28D62D3EC5FA00A88211 /* TabSwitcherViewController+MultiSelect.swift */,
 				984D035924ACCC7D0066CFB8 /* TabViewCell.swift */,
 				F1DE78571E5CAE350058895A /* TabViewGridCell.swift */,
 				984D035724ACCC6F0066CFB8 /* TabViewListCell.swift */,
@@ -8259,9 +8262,11 @@
 				D664C7C92B289AA200CBFA76 /* AsyncHeadlessWebView.swift in Sources */,
 				F1F5337C1F26A9EF00D80D4F /* UserText.swift in Sources */,
 				1E8AD1C727BE9B2900ABA377 /* DownloadsListDataSource.swift in Sources */,
+				8569E1702D52C9A4004A3CB7 /* TabSwitcherBarsStateHandler.swift in Sources */,
 				9FE08BDC2C2A88FA001D5EBC /* OnboardingIntroViewController.swift in Sources */,
 				3157B43527F497F50042D3D7 /* SaveLoginViewController.swift in Sources */,
 				C14D43012B45D6CD00ACA4DC /* AutofillDebugViewController.swift in Sources */,
+				856F28D72D3EC5FA00A88211 /* TabSwitcherViewController+MultiSelect.swift in Sources */,
 				853C5F6121C277C7001F7A05 /* global.swift in Sources */,
 				EE9D68D82AE15AD600B55EF4 /* UIApplicationExtension.swift in Sources */,
 				566B73702BECD46800FF1959 /* MainViewController+SyncAlerts.swift in Sources */,
@@ -8306,7 +8311,6 @@
 				9FE08BD62C2A60CD001D5EBC /* MetricBuilder.swift in Sources */,
 				1E1626072968413B0004127F /* ViewExtension.swift in Sources */,
 				31A42566285A0A6300049386 /* FaviconViewModel.swift in Sources */,
-				851EA0882D39D39600A1A590 /* TabSwitcherTopBarView.swift in Sources */,
 				6F691CCA2C4979EC002E9553 /* FavoritesTooltip.swift in Sources */,
 				CBF259502D37ED6600AC63E4 /* Resuming.swift in Sources */,
 				859DB8132CE6263C001F7210 /* TextZoomStorage.swift in Sources */,

DuckDuckGo-iOS.xcodeproj/project.xcworkspace/xcshareddata/swiftpm/Package.resolved

@@ -0,0 +1,15 @@
+{
+  "images" : [
+    {
+      "filename" : "Bookmark-All-16.svg",
+      "idiom" : "universal"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  },
+  "properties" : {
+    "template-rendering-intent" : "template"
+  }
+}

DuckDuckGo/Assets.xcassets/DesignSystemIcons/16px/Bookmark-All-16.imageset/Bookmark-All-16.svg

@@ -0,0 +1,15 @@
+{
+  "images" : [
+    {
+      "filename" : "Share-Apple-16.svg",
+      "idiom" : "universal"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  },
+  "properties" : {
+    "template-rendering-intent" : "template"
+  }
+}