1. Stores the filename from the table Parser into the font struct so we can lookup fonts via their filename.
2. Allow "+Special Character Font:" to specify the first entry with the same filename's special character index for their own special character index, provide a default if not, and allow the moddert to specify them manually, but do not override already recorded values if the default is picked in order to protect retail behavior.
3. Vectorize Special Character Indexes, so that we don't have a table limit that will randomly crash FSO based on what table you happened to write! Woohoo!
This allows to use standard TrueType Fonts for text rendering in FSO. It uses the NanoVG library which provides the ability of drawing 2D shapes. This library is used for most 2D operations now and can also be used directly by using the PathRenderer class.
JohnAFernandez