Move vt100 specific code into seperate functions or macros

[JayFoxRox]

printf("%c[%dm ", 27, 0); is very hard to understand for beginners.

There's probably better ways to add character attributes if you really have to.
Consider dropping this feature altogether as your tool will likely run in daemon mode anyway.

[JayFoxRox]

Note: https://github.com/FrotBot/SwitchProConLinuxUSB/blob/master/src/procon.hpp#L1232 actually contains this partially. This, however, is even worse as the procon interface should not even print at all (except for critical error messages maybe).

Consider seperating this more cleanly.