Add Chromecast factory reset module

This is the last one. It's an easy one. I promise. :-)

This has been useful (really, I've just been using curl) when I can't (don't want to) reach the reset button or can't (don't want to) use the app.

**Verification steps:**

- [ ] ```set RHOST``` to your Chromecast's IP
- [ ] ```run``` to reset your Chromecast to factory defaults
- [ ] Be patient
It is probably worth an else here with a print_error (or vprint_error) that makes it obvious when this fails.