Moves the font folder into the buildroot

Marlin/fonts/README.md

Marlin/fonts/bdf2u8g.exe

buildroot/share/fonts/HD44780_C.fon

buildroot/share/fonts/HD44780_J.fon

buildroot/share/fonts/HD44780_W.fon

buildroot/share/fonts/ISO10646-1.fon

buildroot/share/fonts/ISO10646-4_Greek.fon

buildroot/share/fonts/ISO10646-5_Cyrillic.fon

buildroot/share/fonts/ISO10646_CN.fon

buildroot/share/fonts/ISO10646_Kana.fon

buildroot/share/fonts/Marlin_symbols.fon

buildroot/share/fonts/README.md

buildroot/share/fonts/make_fonts.bat