Feature Request: Option to encrypt files in the cloud

This would add privacy from Microsoft without hindering user experience. It could be done by encrypting before uploading and decrypting after downloading. Additionally, this would be encrypted using the hash of a user's password as a symmetric key.

Look at the file upload and download flows in the codebase, likely in modules handling cloud sync. Research how to integrate symmetric encryption (e.g., using a password hash) into these flows. Check for existing cryptographic libraries or utilities in the project. Determine what 'done' looks like by verifying encrypted files are stored and decrypted correctly without breaking sync functionality.

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