react on midi note insertion and automatically complete chords

[Timtam]

this should be a toggleable action. Whenever a single note is inserted and this action is toggled on, then the last selected chord in the MIDI editor will be used to determine all missing notes and they will automatically be inserted with the same length, velocity and at the same cursor position than the last inserted note, maybe even playing them at the same time to turn one-finger play style into chord instantly.
It however has to be evaluated if this is even possible, regarding latency issues, tracking when midi events, checking their insertion / if recording is even running and more.