Feat: Anti file blacklist

[ultrabear]

A blacklist against specific files using sha256 hashes under the hood to avoid storing entire files

[ultrabear]

The reason this is pain is cause of how the mainloop processes files after its done the blacklisting, so it needs a secondary blacklist pass
or i could just rewrite the blacklist/file processing who knows

[ultrabear]

This issue is stale, if a user requests this feature again sonnet is at a place where it could be potentially implemented, but currently effort should be put elsewhere