Enhance core library

[jkandasa]

For now, this library exposed some of the methods to users sketch. Which will not be good. And I am unable to define macros from users sketch. core library does not take from there.

• Remove core library code from users sketch.

MyController mc; // <-- Remove this code from users sketch.

void loop() {
  mc.loop(); // <-- Remove this code from users sketch.
}

• Allow change configuration from Users sketch. To modify https://github.com/mycontroller-org/MyControllerDevice/blob/master/McConfig.h needs to do on McConfig.h file. But it should not be.
  User can add different configuration on their sketch itself