Refactor: Remove old test scripts and add comprehensive testing for release notes generation

• Deleted test-create-release-simulation.sh and test-local.sh as they were outdated and no longer needed.
• Updated generate-release-notes.sh to include new commit types: revert, style, test, chore, build, and ci.
• Enhanced the release notes generation logic to handle additional commit types and ensure proper formatting.
• Introduced test-all-commit-types.sh to validate the release notes generation across various scenarios, including:
  • Full set of conventional commit types with breaking changes.
  • Handling of unknown commit types with fallback messages.
  • Mixed known and unknown types.
  • Breaking changes detected in commit body.
  • Correct filename generation for release branches with suffixes.
  • Normalization of hotfix branch versions without 'v' prefix.