Pointer Icon Refactor: Integrate mouse pointer acceleration

Before the refactoring, there could only be one mouse pointer globally,
so we only needed a boolean toggle for controlling pointer acceleration.

Now, since we can have multiple mouse pointers on different displays, we
need to be able to configure pointer acceleration on a per-display
basis.

Bug: 311651709
Test: atest inputflinger_tests
Test: atest InputManagerServiceTests
Change-Id: I60a8017ac734a392223a661210c8b0c980ca5004