Add support for inline RGB Support | Extension of PR #1064

[KAMKEEL]

Please view the original PR the breakdown.

PR #1064

Huge credit to @alppp for creating the base foundation of this.

This is based on PR #1064, which aims to add RGB Support to Angelica. I have modified their existing commits to help create better String Size handling, so other mods with in-line editors do not encounter issues with this new modification.

I've used the PlugEditor (an in-line book editor) mod as my test case for this because it heavily relies on FontRenderer functions such as String Length and Color Code recognition. https://github.com/KAMKEEL/BookEditor/tree/format

Before my new commits, this mod had issues with returning wrongful lengths.

Notable Changes:

• Better Handling of Draw String for RBG Color Coding Lengths. Previous the lengths were incorrectly set to 9 and 10, now they have been adjusted to 8 and 9 to be in line with how Vanilla Minecraft handles Color Coding lengths.
• Support for \n in the MixinFontRenderer which is present in vanilla's FontRenderer, although it isn't really used as a new-line but, a break for the line length.
• Made the Mixins for the sizeStringToWidth, getCharWidth, etc clamp to ceiling integers to have better estimation of length during bold lettering. Fixes floating point cut-offs.
• Modified the Callback Info of sizeStringToWidth back to Integer so access_transformers or reflections that use the sizeStringToWidth no longer crash because they expect an Integer and not a String
• Every new color resets the formatting (Italics, Bold, Strikethrough) similar to Vanilla-logic and handling of coloring.
• Added missing Glyph Spacing

[KAMKEEL]

Currently in the process of porting this to another mod entirely. Angelica will be able to utilize the API to support. I will update this PR when the time comes.

[KAMKEEL]

Closing for #1104