ASCII/UTF-8 Text and Full Multilang Support

[arthurtilly]

• Changes the vanilla text systems to support ASCII and UTF-8 encoded text.
• Textconv and the charmaps have been completely removed.
• Adds in proper multi-language support for all four languages, easily toggleable with config files.
• Adds new characters required for all languages to work, as well as some extra characters.
• Adds a full diacritic system allowing all accented characters to be used easily.
• Every character can be used in every language, even Japanese characters if the define is enabled.
• Text printing functions have been optimized and given new features such as alignment, escape characters, %s in dialogs.
• Vanilla menus have been reworked in order to utilise sprintf and text alignment better.

Puppycam / puppymenu integration will be worked on while people review the current state of the PR as it is very separate from the rest of the code.