Add actions for changelog workout

[duckhawk]

Add composite actions for release automation

Description

This PR adds two new composite actions to automate the release process for modules:

1. translate-changelog - Automatically translates Russian changelog files to English and creates a PR
2. merge-and-release - Merges a PR and creates a GitHub release with tag

Changes

1. translate-changelog Action

• Automatically finds the latest Russian changelog file (by SemVer) in the CHANGELOG directory
• Translates content to English while preserving formatting and indentation
• Creates a PR from the current branch with the translated file
• Only runs if the last commit contains changes in CHANGELOG/*.ru.yml files

Features:

• Line-by-line translation preserving YAML structure and indentation
• Uses deep-translator with Google Translate API
• Automatically determines version from filename
• Skips files that already have an English version

2. merge-and-release Action

• Merges PR using squash merge strategy
• Deletes branch after merge
• Creates Git tag based on version extracted from PR title
• Creates GitHub Release with content from English changelog file

Features:

• Support for PAT (RELEASE_PAT) to trigger workflows via tag push
• Automatic version extraction from PR title
• Handles existing tags (skips if tag already exists)
• Proper git credentials configuration for PAT usage

Usage

Usage examples have been added to .examples/:

• translate-changelog.yml - Example workflow for translating changelog
• merge-and-release.yml - Example workflow for merging and releasing

Technical Details

• For merge-and-release to work correctly with PAT:

  • Configure RELEASE_PAT secret in the repository
  • Use persist-credentials: false in actions/checkout
  • PAT must have repo and workflow permissions

• Translation preserves YAML structure and indentation by translating line-by-line

• Both actions are composite actions and can be used in any module repository

Documentation Updates

• Updated README.md with descriptions of new actions
• Added usage examples in .examples/