Add --json, --list-providers, ignore inactive, add colors (#11)

Author: grant0417

README.md

@@ -11,7 +11,7 @@ Gets the list of Mullvad servers with the best latency according to `ping`.
 2. Run the following command
 
 ```shell
-deno run --allow-net=api.mullvad.net,deno.land --allow-run=ping https://raw.githubusercontent.com/grant0417/mullvad-ping/v0.6.0/script.ts
+deno run --allow-net=api.mullvad.net,deno.land --allow-run=ping https://raw.githubusercontent.com/grant0417/mullvad-ping/v0.7.0/script.ts
 ```
 
 Note: The Windows version of `ping` is somewhat more limited than that of Linux
@@ -22,15 +22,17 @@ or Mac so the times are less precice and the script will take ~5x longer.
 ```
 Usage: script [OPTION]
     --country <code>      the country you want to query (eg. us, gb, de)
-    --list <plain|json>   lists the available servers
+    --list                lists the available servers
     --list-countries      lists the available countries
+    --list-providers      lists the available providers
     --type <type>         the type of server to query (openvpn, bridge, wireguard, all)
-    --count <n>           the number of pings to the server (default 3)
-    --interval <i>        the interval between pings in seconds (default/min 0.2)
-    --top <n>             the number of top servers to show, (0=all)
+    --count <n>           the number of pings to the server (default 5)
+    --top <n>             the number of top servers to show, (0=all, default 5)
     --port-speed <n>      only show servers with at least n Gigabit port speed
     --provider <name>     only show servers from the given provider
     --owned <true|false>  only show servers owned by Mullvad
     --run-mode <type>     only show servers running from (all, ram, disk)
-    --help                usage information
+    --include-inactive    include inactive servers
+    --json                output the results in JSON format
+    --help, -h            display this help and exit
 ```