Matchmaking improvements, quality of life, performance

[h2]Matchmaking[/h2]
- Backfill will no longer trigger during or after a successful forfeit vote
- New player ratings now work differently and will be matched at a lower rank (more info below)

[h2]Quality of Life[/h2]
- Added an audio slider specifically for the goal horns
- In offline bot matches, the mercy rule will no longer be triggered
- Added a reset button for the custom quick chat

[h2]Performance[/h2]
- Optimized the player character models for better performance

[h2]Cosmetics[/h2]
- Added cosmetics: Icy stick, icy jersey, tail, butter knife stick, Mjolnir stick
- Reworked the iron hat cosmetic

[h2]Fixes[/h2]
- Fixed an issue where the camera smoothing kept resetting

[h2]More info on the matchmaking changes[/h2]
The starting rating of players will be lower compared to the average rating to increase the average first-match win rate. This should do a few things:
- It will make it less likely that people at higher ranks queue into new players
- New players should be matched up with people more equal in skill to them from the active player pool
- New players will start out at the equivalent of a low Silver 2 rather than mid Silver 3

This doesn't address all of the issues people are having with the matchmaking and more changes are planned but we hope this is a good start. We'll be monitoring the impact of the change.

Good luck, have fun.
- The Oddshot Team