Starts 'led_morse' API.
Morse: Represents international morse code into memory.
Morse: Implements 'morse_write_letter'.
Refactors 'morse_write_letter', implements 'morse_write_char'.
Implements 'api_led_morse', allowing user to display char * with the led!
Merge branch 'morse' into 'dev' bringing 'api_led_morse' feature.