GitHub Bot: Automatic release generation for dependency-only changes

[konard]

Summary

Implements automatic release generation when GitHub Bot detects that commits contain only dependency library updates, addressing issue #98.

Changes

• New CommitTracker: Monitors commits on the main branch across all organization repositories
• New DependencyOnlyReleaseTrigger: Detects dependabot commits that only modify dependency files and automatically creates releases
• Updated Program.cs: Integrated the new tracker into the bot's main execution loop

Features

Automatic Detection

• Identifies commits from dependabot (user ID 49699333)
• Validates that only dependency files were modified
• Supports multiple dependency file types:
  • C#: .csproj, packages.config, .sln
  • Node.js: package.json, package-lock.json, yarn.lock
  • Python: requirements.txt, Pipfile, Pipfile.lock, pyproject.toml
  • Rust: Cargo.toml, Cargo.lock
  • Go: go.mod, go.sum
  • Ruby: Gemfile, Gemfile.lock

Release Management

• Generates descriptive release tags: deps-YYYY.MM.DD-shortsha
• Creates meaningful release names: Dependency Updates - YYYY-MM-DD
• Includes commit information and links in release body
• Prevents duplicate releases through processed commit tracking
• Uses commit SHA as target for release tagging

Test Plan

• Verify bot compiles without errors ✅
• Test trigger logic with sample dependabot commits
• Validate file type detection for different dependency formats
• Ensure duplicate prevention works correctly
• Test release creation with proper tagging and descriptions

🤖 Generated with Claude Code

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Resolves #98