Chat tweaks

**Is your feature request related to a problem? Please describe. Also with solution**
Well my chat history is pretty small - it would be cool, if you could set a custom chat length
Maybe even a sound, if you (or even a special string) gets said in chat.
Such stuff; just general chat tweaks

**Describe alternatives you've considered**
There is no bigger chat mod for fabric, so I guess that's only an alternative for 1.8

Thanks!

Look for chat-related classes in the mod's source code, likely under a package like 'chat' or 'gui'. Start by understanding how chat history is currently stored and rendered. The feature requires adding configuration for chat length and implementing sound triggers, which involves both UI changes and event listening. Check if there are existing settings panels to extend.

Written by the indexing model from the issue text.