Create InputDevice when initializing layoutlib

During the loading of the native library for layoutlib, this sets up
InputDevice from the key character map files provided by the layoutlib
Bridge.
That will allow key events to be handled as they are in the Android
platform.

Bug: 255328531
Test: N/A
Merged-In: Ibd65ced52e4ddddb95923a86ceb373aac9b83618
Change-Id: Ibd65ced52e4ddddb95923a86ceb373aac9b83618