feat(command/issue): allow issue URL as argument

[profclems]

Description

This PR enables issue URL to be passed as argument.

The user can now specify an issue by either the ID or URL.

Supports:

• HOST/OWNER/REPO/issues/ID
• HOST/GROUP/NAMESPACE/issues/ID
• HOST/OWNER/REPO/-/issues/ID
• HOST/GROUP/NAMESPACE/-/issues/ID

eg:

• glab issue close https://gitlab.com/profclems/glab/issues/277
• glab issue close 277
• glab issue close https://gitlab.com/profclems/glab/-/issues/277
• glab issue close https://salsa.debian.org/GROUP/NAMESPACE/REPO/issues/123

Also adds support for IDs prefixed with '#'

• glab issue reopen "#277"

Related Issue

None

How Has This Been Tested?

Manually tested on gitlab.com/profclems/glab, private group repo and a few repos on salsa.debian.org

TODO: add unit tests

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation
• Chore (Related to CI or Packaging to platforms)

[profclems]

I will fix the tests early in the morning... Gotta have some rest

[codecov]

Codecov Report

Merging #546 (c177751) into trunk (54324ab) will decrease coverage by 0.46%.
The diff coverage is 55.00%.

@@            Coverage Diff             @@
##            trunk     #546      +/-   ##
==========================================
- Coverage   60.88%   60.41%   -0.47%     
==========================================
  Files          86       86              
  Lines        5913     5965      +52     
==========================================
+ Hits         3600     3604       +4     
- Misses       1979     2015      +36     
- Partials      334      346      +12     

Impacted Files	Coverage Δ
commands/mr/list/mr_list.go	63.77% <42.85%> (-9.85%)	⬇️
commands/issue/list/issue_list.go	64.70% <45.28%> (-20.48%)	⬇️
commands/issue/update/issue_update.go	50.00% <75.00%> (-0.49%)	⬇️
commands/issue/close/issue_close.go	83.33% <100.00%> (-1.29%)	⬇️
commands/issue/delete/issue_delete.go	81.81% <100.00%> (-1.52%)	⬇️
commands/issue/note/issue_note_create.go	93.75% <100.00%> (+4.86%)	⬆️
commands/issue/subscribe/issue_subscribe.go	81.81% <100.00%> (-2.80%)	⬇️
commands/issue/unsubscribe/issue_unsubscribe.go	81.81% <100.00%> (-2.80%)	⬇️
commands/issue/view/issue_view.go	84.61% <100.00%> (+1.00%)	⬆️
commands/mr/mrutils/mrutils.go	74.61% <100.00%> (ø)

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