feat(#126): OnAttachedLabel.java

[h1alexbel]

closes #126

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PR-Codex overview

This PR focuses on updating file paths and imports related to GitHub hooks.

Detailed summary

• Updated file paths for GitHub hooks
• Updated imports for GitHub hooks
• Added new test cases for GitHub hooks
• Implemented logic for parsing comments in TkGitHub class
• Added RqIssue class for handling GitHub issue requests

The following files were skipped due to too many changes: src/test/java/git/tracehub/agents/github/issues/RqIssueTest.java, src/test/java/it/OnAttachedLabelITCase.java, src/main/java/git/tracehub/agents/github/issues/OnAttachedLabel.java, src/test/resources/it/github/bug-123.json, src/test/resources/github/hooks/labeled/new-label.json

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[codecov[bot]]

Codecov Report

Attention: 14 lines in your changes are missing coverage. Please review.

Comparison is base (c36a4ba) 78.55% compared to head (5f18e68) 77.38%.

Files	Patch %	Lines
...tracehub/agents/github/issues/OnAttachedLabel.java	0.00%	13 Missing :warning:
...in/java/git/tracehub/agents/github/CreatePull.java	0.00%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #137 +/- ## ============================================ - Coverage 78.55% 77.38% -1.18% - Complexity 136 138 +2 ============================================ Files 48 50 +2 Lines 471 482 +11 Branches 21 22 +1 ============================================ + Hits 370 373 +3 - Misses 95 103 +8 Partials 6 6 ```

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[h1alexbel]

puzzles are created for uncovered areas, we need to move the next tasks