[optional] Versioning for Files (History of changes) #34
Description
Maintain previous versions of files upon edits and uploads, allowing users to list, diff, and restore versions. Store version metadata (author, timestamp, change summary, hash) and define a storage strategy (e.g., delta vs. full copy, retention policy). Add endpoints for listing versions, fetching a specific version, and restoring. Ensure integrity checks and access controls on version history. Provide unit tests and documentation.