NoChatFade

This is a major refactor because 1.21.11 changed how chat functions

• The old "getMessageOpacityMultiplier" method no longer exists
• Instead, the old method was renamed to "timeBased" but is now used inside of an interface called "OpacityRule" within the ChatHud class
• Because of this, an accesswidener (AW) is needed to reach the OpacityRule interface in order to force full visibility

Functionality (should) remain the same as before, and the only difference is where the method is located and accessed