Cleanup: relocate fl_color code to f_color and remove fl_color.

Cleanup: relocate fl_color code to f_color and remove fl_color.

Ever since f_string became a core/required/special project where all level_0 could depend on it, fl_color no longer needed to be at level_1.
Relocate fl_color into f_color, removing the fl_color project entirely.

Update all dependencies.
This exposed some missing dependencies in fll_program that fl_color is secretly handling.
Fix that as well.