* A personal layout for the orthodox keyboard
* Added layout readme.md
* Consolidated inclues with #include QMK_KEYBOARD_H
* Moved layer tones setup to config.h
* Replace persistent_default_layer_set calls with set_single_persistent_default_layer
* Simplified the process_record_user function using layer_state_set_user function and MO() to set the lower, raise, nav and media layers
* Removed AUDIO_ENABLE ifdefs and persistent_default_layer_set() as they are not needed any more
