An option to Trigger Switch flip while activity is starting or stopping
**Is your feature request related to a problem? Please describe.**
Trigger Switch flip while activity is starting or stopping, vs once it has fully started or fully stopped.

**Describe the solution you'd like**
Not sure if Harmony provides status before the activity state has fully transitioned or not. But if it does provide information about an activity still in process of starting or stopping, then we could potentially add an option to reflect switch flip to happen when state change was initiated, vs when it was finished.

This would allow me to fast track some of the HomeKit automations to happen in parallel, rather than wait for them to start in series.

**Describe alternatives you've considered**
None that I can think of.

**Additional context**
Please do let me know if you would like additional info and I can provide it.
