Refactor and consolidate the current FF1 Generator feature set (rosco file generation + GUI)

Closes #4231 (closed), #4251 (closed), #4250 (closed), fortissimo/ff1_simulation/ff1_generator#16, fortissimo/ff1_simulation/ff1_generator#11, fortissimo/ff1_simulation/ff1_generator#14, and fortissimo/ff1_simulation/ff1_generator#12.