fix: Fixed play/pause handling

fix: Fixed cursor direction logic

fix: Fixed cursors display and volume, play/pause updates

fix: Fixed audio features update

fix: Fix thread lock implementation in audio processing

fix: Handle thread communication

docs: Add initial documentation

feat: Add audio processing and hand gesture link

feat: Add all functionnal controllers

feat: Add volume, pitch and speed video overlay

fix: Fix sound smoothness (partially)

fix: Fix buffer out of range for pitch and speed

fix: Fix pitch and speed shift

feat: Add pitch and speed shift with rubberband

feat: Add pitch and frequency shift