gh-17 adding list and summary and prune function

Breaking:
- option regex replaced with glob as was implemented as glob. regex might come later using grep as filter

New features:
- added: function "list" artifacts command with glob pattern
- added: function "summary" using delimiter (default: /) . it finds all first fields and then counts number of artifacts given the pattern
- added: function "prune". given a pattern find all artifacts and then keep the last amount given (default: 20).  It is supporting --dryrun option

Tests:
- refactor tests to functions and enable single test case execution - it is still defaulting to * if not given
- tests for new functions

Author: bicschneider

.test/7/git-reference.log

@@ -0,0 +1,10 @@
+*  (tag: v7.1) v7.1
+| *  (tag: v2.0) v2.0
+|/  
+| *  (tag: v1.0) v1.0
+|/  
+*  (HEAD -> main, origin/main) First commit of git artifact
+v1.0
+v2.0
+v7.1
+Tags found: v*.* : 3

.test/8/git-reference.log

@@ -0,0 +1,34 @@
+*  (tag: test2/v8.7) test2/v8.7
+| *  (tag: test2/v8.6) test2/v8.6
+|/  
+| *  (tag: test2/v8.5) test2/v8.5
+|/  
+| *  (tag: test2/v8.4) test2/v8.4
+|/  
+| *  (tag: test2/v8.3) test2/v8.3
+|/  
+| *  (tag: test2/v8.2) test2/v8.2
+|/  
+| *  (tag: test2/v8.1) test2/v8.1
+|/  
+| *  (tag: test1/v8.5) test1/v8.5
+|/  
+| *  (tag: test1/v8.4) test1/v8.4
+|/  
+| *  (tag: test1/v8.3) test1/v8.3
+|/  
+| *  (tag: test1/v8.2) test1/v8.2
+|/  
+| *  (tag: test1/v8.1) test1/v8.1
+|/  
+| *  (tag: v2.0) v2.0
+|/  
+| *  (tag: v1.0) v1.0
+|/  
+*  (HEAD -> main, origin/main) First commit of git artifact
+Summary of of amount of tags in using delimiter: / and filter on first column
+----------------------------------------------------------------------------------------
+v1.0 : 1
+test2 : 7
+test1 : 5
+v2.0 : 1

.test/9/git-reference.log

@@ -0,0 +1,44 @@
+*  (tag: v9.10) v9.10
+| *  (tag: v9.9) v9.9
+|/  
+| *  (tag: v9.8) v9.8
+|/  
+| *  (tag: v9.7) v9.7
+|/  
+| *  (tag: v9.6) v9.6
+|/  
+| *  (tag: v9.5) v9.5
+|/  
+| *  (tag: v9.4) v9.4
+|/  
+| *  (tag: v9.3) v9.3
+|/  
+| *  (tag: v9.2) v9.2
+|/  
+| *  (tag: v9.1) v9.1
+|/  
+| *  (tag: v2.0) v2.0
+|/  
+| *  (tag: v1.0) v1.0
+|/  
+*  (HEAD -> main, origin/main) First commit of git artifact
+Amount of tags total: 12
+Amount of tags to be pruned: 7
+Amount of tags to be kept: 5
+Dry run - not executing prune command
+*  (tag: v9.10) v9.10
+| *  (tag: v9.9) v9.9
+|/  
+| *  (tag: v9.8) v9.8
+|/  
+| *  (tag: v9.7) v9.7
+|/  
+| *  (tag: v9.6) v9.6
+|/  
+*  (HEAD -> main, origin/main) First commit of git artifact
+v9.6
+v9.7
+v9.8
+v9.9
+v9.10
+Tags found: v*.* : 5