GitLab

Fixes gajim#10581

Makes webp/avif/jxl work on older servers with outdated mime databases.
Also makes it perform content sniffing for cases where file extensions
are totally wrong.

Fixes #528

The encrypt_file method from PGP module needed a stream instead of
bytes

The returned error from save_to_bufferv() is not always reliable,
and might be True even if saving succeeded.

- Anti Spam
- Message Length Notifier
- OMEMO
- OpenPGP
- PGP
- Tic Tac Toe