Adds getSuggestedFrameRate api

This api returns the suggested frame rate for the provided categories.
The suggested rate can be used further to build the FrameRateParams for setFrameRate call or call
the setFrameRate using the FrameRateParams.

BUG: 361433796
Flag: com.android.server.display.feature.flags.enable_get_suggested_frame_rate
Test: atest android.display.cts.DisplayTest
Change-Id: Ic566c77e9e7eae0a4c6a687a9a176e0ea7a4a5ea