Pointer icon refactor for touch

When PointerChoreographer is enabled, PointerChoreographer can
create multiple TouchPointerControllers for each touch device
when 'Show taps' is enabled. A TouchPointerController is
reponsible for one touch device and it can show touch spots
on the associated display.

Test: atest inputflinger_tests
Bug: 293587049
Change-Id: I1a89a467c3c446cfe7f72444d9c425b45dc8d8ed