Add TouchIntegrationTest tests

Base on InputReaderIntegrationTest which would test the threading
functionality. This would emulate the touch screen device and
send the raw events to verify if InputListener could really
receive the MotionEvent.

- Add tests for handling single touch and multi touch.
- Add test for handling MT_TOOL_PALM.

Bug: 117933934
Test: atest TouchIntegrationTest
Change-Id: I450c0159ac60d7da0471235407b3c537ab94fa6f