Improve Emojicord's emoji context calculation

[Meldexun]

Emojicord calls Thread.currentThread().getStackTrace() to calculate the emoji context whenever text gets rendered. For example, in the hotkey menu, there is a huge FPS drop. Also, see Team-Fruit/Emojicord#23.

This PR fixes this issue by setting a flag at the start of GuiChat#drawScreen and GuiNewChat#drawChat which eliminates the need to check the stack trace.

[what-the-diff]

PR Summary

• New Dependency Added
  We've included a new dependency for emojicord in the dependencies.gradle file.
• Debug Support
  In gradle.properties, a debug flag has been added for emojicord to support troubleshooting.
• Configuration Settings Update
  We've introduced a new emojicord category with a boolean configuration property in UTConfigMods.java to provide more control over this functionality.
• Plugin Loading Update
  In UTLoadingPlugin.java, we've added a field to check if the EmojicordCorePlugin is loaded, and included a condition for new mixin configuration related to emojicord.
• New Component Development
  We have added a new class EmojiFontRendererContext.java for managing font rendering context for emojis.
• Mixin Class Additions
  Three new mixin classes (UTEmojiFontRendererMixin.java, UTGuiChatMixin.java, UTGuiNewChatMixin.java) have been added for expanding functionality and interaction with emojis.
• Localization Improvement
  A new translation for emojicord has been added to the en_us.lang file to enhance user interface experience.
• Mixin Configuration Update
  A new emojicord related mixin configuration has been added in mixins.mods.emojicord.emojicontext.json for better control over emojicord interactions.

[ACGaming]

Can you add a readme entry for this? Otherwise, this is good to merge!

[Meldexun]

Can you add a readme entry for this? Otherwise, this is good to merge!

Done.

By the way I forgot to mention that I added the mixin config to UTLoadingPlugin because the EmojiFontRenderer class and the GuiChat class are loaded early and thus require IEarlyMixinLoader. I noticed that all other mod mixin configs are added to UTMixinLoader. Just wanted to tell you because I'm not sure if what I did is correct and might be overlooked easily.

[ACGaming]

Since these are essentially vanilla injections which require EmojiFontRendererContext, UTLoadingPlugin should be the right choice. Regular mod detection would not work at this stage but this is already handled via reflection class checking.