Add test commands to spoof presence of contaminants

This CL simulates contaminant presence through simulated port.

1. Add a port: dumpsys usb add-port "matrix" ufp
2. Set contaminant presence to true: dumpsys usb set-contaminant-status "matrix" true
3. Set contaminant presence to false: dumpsys usb set-contaminant-status "matrix" false

Bug: 119642987
Bug: 117330206
Bug: 77606903
Test: Made sure that dumpsys usb reflected the correct contaminant
status.
Change-Id: Iadb0ea92db65afdb25dbd32c02d9fb778bd4ec8c