USI Stylus settings Fragment.

The USI stylus settings fragment shows specific preferences
for USI stylus devices only.

There is currently no way to access this fragment from the UI.

Bug: 251201006
DD: go/stylus-connected-devices-doc
Test: StylusUsiHeaderControllerTest
Change-Id: I18223abc8113dce977f57f930ba701da0a34cc18