feat: Add Annotated Tag Push Support

[fabiovincenzi]

Description:
This PR introduces end-to-end support for annotated tag pushes

• Split the push pipeline into separate branchPushChain and tagPushChain.
• Update getChain() to select the correct chain based on action.type and presence of action.tag.
• Render a dedicated “Tag Details” table when viewing a tag push instead of the commit diff.

Fixes #986

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[codecov]

Codecov Report

Attention: Patch coverage is 82.43243% with 26 lines in your changes missing coverage. Please review.

Project coverage is 81.52%. Comparing base (0e60143) to head (f3af7e7).

Files with missing lines	Patch %	Lines
src/proxy/processors/push-action/parsePush.ts	76.38%	3 Missing and 14 partials ⚠️
src/ui/utils/pushUtils.ts	86.44%	2 Missing and 6 partials ⚠️
.../proxy/processors/push-action/checkAuthorEmails.ts	0.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1051      +/-   ##
==========================================
+ Coverage   77.40%   81.52%   +4.11%     
==========================================
  Files          56       57       +1     
  Lines        2288     2376      +88     
  Branches      258      292      +34     
==========================================
+ Hits         1771     1937     +166     
+ Misses        487      389      -98     
- Partials       30       50      +20     

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[jescalada]

Just leaving some comments after looking through the code, will update after testing the flow.

[jescalada]

Just a heads up: looks like this'll have a lot of conflicts with the upcoming changes... Though, we probably want to merge this as a v2 feature anyways.