[SMD] Improve font

[Mark65537]

• Add function for load custom font in .bin format. For example:

/** Load fonts. */
  public static void loadFonts(string pathToFont) { }

• Change the initial font offset, for example, move to 0x0000 like in GINCS, as it is very inconvenient that the font is in the middle.

• Currently, only capital letters of the English alphabet are available in the megadrive font. Need to add lowercase letters, numbers, and punctuation marks.