implement a sequencer/note-editor layer

[raphaelquast]

controls

• 16 notes

• note-controls

  • [x] mute state
  • [x] velocity
  • [x] pitch
  • [x] start time
  • [x] duration
  • [x] random
  • transpose
  • [x] all notes of selected clip
  • [x] only notes in loop

• loop-controls

  • [x] length
  • [x] position

• LED feedback

  • [x] playback position
  • [x] note state (muted / active)
  • [x] indicate that notes are inside/outside of loop

• general

  • [ ] update assignments images
  • [ ] update overlay design
  • [x] focus note view on sequencer-activation
  • [x] initialize different sequence-quantizations (e.g. 1/2, 1/4, 1/8, 1/16 notes)
  • [x] initialize different sequence-tempos (e.g. 1, 2, 4, 6, 12, 16, 32, 64 beats sequences)
  • [x] initialize different sequence-velocities (e.g. 0.25, 0.5, 0.75, 1)
  • [x] allow transposing notes while in sequence-initialization layer