Backend: Blacklist speedup

[ultrabear]

The current implementation of the word blacklist and url blacklist are based on the size of the blacklist and message O(bm) for processing, these implemetations are slow and can be migrated to only be dependent on the size of the message by hashing the blacklist and become O(m), this allows for later expansion of the url blacklist to support the 400kb discord scammers url list