Consolidate the toggle and toggle-control Stimulus controllers

Consolidate the toggle and toggle-control Stimulus controllers: a task in MiMo-V2.6-RL-harbor-code: MiMo-V2.6-RL Code (Harbor) (Harbor dataset). We currently have two Stimulus controllers in app/webpacker/controllers/ that do morally the same thing — they read the state of an input and use it to…