feat: add mzapo sdl module

feat: add mzapo sdl

fix: add linking of gui lib for file browser

fix: text viewer blink rgb leds when scroll past line

fix: rgb leds time difference

docs: add device mount documentation

feat: add timeout for rgb leds

fix: options to cast to intptr instead of uint

feat: add new font with variable width

docs: add doxygen config

feat: add mime type options

fix: get corret errno on file copy

feat: implement device mount using system

feat: add list container logic

fix: set extern file access correctly

fix: endif comment out name of if

feat: add extern device access

refactor: make fileaccess state from union

feat: add temp file access

feat: add copy and move operations for local filesystem