Add a PaginatedGridLayout

The layout delegates to other layouts to show each page, as well the
edit mode.

Right now, the delegation is hardcoded in PanelsModule.

Test: atest com.android.systemui.qs.panels
Test: manual
Fixes: 347915821
Flag: com.android.systemui.qs_ui_refactor
Change-Id: I6a0dc3d4b2b56a5f3a41d366706839fe3c393b29