Update TrustedPresentationListener docs and update exceptions

Document what kind of tokens can be passed into the API
registerTrustedPresentationListener (and @link the APIs where you can get those tokens)
Add docs for  registerTrustedPresentationListener methods (copied
from similar API from SurfaceControl)
Change rethrowAsRuntimeException to rethrowFromSystemServer for remote
expections caught when calling into WMS

Test: presubmit
Fixes: 316093854
Change-Id: I102cf5ed4ceda1ea726ddda1e842b58a4a3c0388