Feature/update script

[kmturley]

Automated upgrade script which synchronizes the registry with the latest releases from GitHub. It effectively acts as a package updater for the registry's metadata. This script removes the manual effort required to keep the audio registry up to date as developers release new versions of their plugins, apps, or presets on GitHub.

• Package Discovery & Version Tracking: It scans the src/ directory to identify all registered packages and their current versions, determining the "latest" local version using semantic versioning logic.
• GitHub Integration: For packages hosted on GitHub, the script queries the GitHub Releases API to check for newer tags or releases. It includes robust error handling for API rate limits, automatically pausing and retrying when limits are reached.
• Automated Metadata Generation: When a new version is detected, the script:
  • Normalizes the version string to follow SemVer standards.
  • Extracts release notes (for the changes field) and publication dates.
  • Identifies new binary assets (installers/archives) matching the existing package structure.
• Integrity Validation: It automatically downloads new assets to calculate their SHA256 checksums and retrieves their file sizes, ensuring the generated metadata is accurate and secure.
• Registry Update: Finally, it creates the necessary directory structure for the new version and generates a formatted index.yaml file, preserving the standard property order defined in the project specification.

Relates to #156