Move FrameMetricsObserver logic into UI Module.

Introduce HardwareRendererObserver to isolate the android.graphics
package from the android.view package.  The native code that
interacts with the observer was also moved from libandroid_runtime to
libandroid_graphics to keep it within the confines of the UI Rendering
module.

Bug: 137655431
Test: CtsUiRenderingTestCases
Change-Id: Ibccecbeda0c4d9501d86514a53eb98548233ba6a