Simple Keybinds

--- Key Changes: ---
- New keybind to change master volume (using the scroll wheel): "M".
- The default key for Toggle Chunk borders is now "B".
- The default key for Change Render Distance is now "R".

--- A few tweaks and improvements: ---
- Disabling fullbright now sets the brightness back to whatever it was before fullbright was toggled (unless the brightness previously was greater than or equal to 800%, as that is close enough to fullbright, the brightness will still be set to 100%. The game only remembers the previous value as long as it was toggled during the current game session).
- Changing options, like render distance and entity distance, will now display the message in a certain color which reflects performance (ex. 32 render distance will show in red, 8 render distance will show in green).
- Changing options now actually saves the value to the "options.txt" file.
- Removed error messages when attempting to increase/decrease a value above or below its max/min value.

All versions compatible with Fabric.
Versions 1.20.1, 1.21, and 1.21.1 compatible with Forge/NeoForge with the Sinytra Connector mod and Forgified Fabric API mod.