fix: add missing include guards

feat: add image region move

feat: add image set and get pixel functions

fix: ppm image loading

feat: use floats instead of doubles

fix: struct constants

fix: put correct max color constants

refactor: move direction functions to separate module

fix: makefile ovewrite of cflags

feat: add basic image viewer loop

feat: add ppm image loading

feat: add basic image functions

feat: add logger

feat: add input handling functions

feat: add display utils functions

fix: add compile commands to makefile

feat: add nonblocking io functions

feat: add cursor functions

feat: add main implementation

refactor: add lcd command macro