[FEATURE] Implement device resets and support persistent data

**Is your feature request related to a problem? Please describe.**
We don't have an integrated solution for resetting a device. I.e. it's not simple for users to validate post-reset functionality (like ensuring persistent data got saved correctly).

**Describe the solution you'd like**
We should be able to reload the firmware object of the device we'd like to reset. We'll need to figure out how to save data that's supposed to be persistent across reloads.

No files, tests, or entry points are named. Start by locating the simulator's firmware-object lifecycle and any existing handling for persistent data; the work is complete when a device can be reset by reloading its firmware object and persistent data remains available for post-reset validation.

Written by the indexing model from the issue text.