[Feature] Choose which figures can appear

[Vernalhav]

Describe the solution you'd like
The user should be able to view a list with all rhythmic figures and select which ones they would like to appear.

[Vernalhav]

This would involve creating a list with all the current figures (as per src/assets/RhythmicFigures/index.tsx) and altering getRhythmicFigure (src/utils/getRhythmicFigure) likely to accept a new parameter (the list of chosen figures).
Overall, the most difficult thing would be creating the components and CSS necessary to interface with the user.