GhRun and AcceptInvites

[h1alexbel]

closes #6

---

PR-Codex overview

This PR focuses on accepting GitHub invitations in the background.

Detailed summary

• Added GhRun class to schedule accepting GitHub invitations.
• Renamed Invites class to AcceptInvites.
• Updated AcceptInvites class to implement Proc<Boolean> interface.
• Modified AcceptInvites class to accept invitations using GitHub API.
• Added GhRunITCase integration test case to verify the functionality of GhRun class.

✨ Ask PR-Codex anything about this PR by commenting with /codex {your question}

[codecov[bot]]

Codecov Report

Attention: 25 lines in your changes are missing coverage. Please review.

Comparison is base (58c19ea) 82.68% compared to head (075c00c) 80.80%. Report is 19 commits behind head on master.

Files	Patch %	Lines
...java/git/tracehub/agents/github/AcceptInvites.java	0.00%	14 Missing :warning:
...rc/main/java/git/tracehub/agents/github/GhRun.java	0.00%	10 Missing :warning:
src/main/java/git/tracehub/Entry.java	0.00%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #114 +/- ## ============================================ - Coverage 82.68% 80.80% -1.88% Complexity 119 119 ============================================ Files 38 39 +1 Lines 387 396 +9 Branches 19 19 ============================================ Hits 320 320 - Misses 61 70 +9 Partials 6 6 ```

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.

[h1alexbel]

unfortunately we can't run this tests on MkGithub since it does not work with JSON Invitation API