Enhanced the first blood notification to display both the killer's and victim's first blood and first death stats, added relevant emojis for clarity, and split the message into multiple lines for better readability.

- Announce the stats of killer and first death victim in Chat

The '!fb' chat command can now be used as a shortcut for '!firstblood', improving usability for players.

- more optimizations

- remove the need of ulib
- massive optimizations