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
Change-Id: I6a85fe18dc0a5ea8fc5d41829e95a7c89c11a0a0