Merge branch 'dev' into 'master'

Implement first versions of file browser, text viewer and image viewer

See merge request bohacfr2/apo-sem!1

feat: add correct error messages for text viewer and image viewer

fix: includes for jpeg

docs: correct formatting

docs: add code documentation

feat: add zooming to cursor

feat: add possibility to write only to part of the display

feat: add image region move

feat: add image set and get pixel functions

feat: add basic image functions