From Subsystem based Library to seperate folder Library

[mekathegapple]

Instead of adding the library code to subsystems folder, using another folder next to frc/robot (frc/kelrotlib) lets us not change the code at all and extend the library code into a subsystem.

idea and request of @recepsirin0

[mekathegapple]

current commit (d828bb3) has the led subsystem as an example

after review this will be an exampleLibrary code to make it general