QSDetailedView: Add ModesDetailsViewModel to modes tile

Create a class of ModesDetailsViewModel and initialize an instance in
ModesTileUserActionInteractor so that the details view will show up when
the flag is enabled.

Bug: b/378513827
Flag: com.android.systemui.qs_tile_detailed_view
Test: ModesTileTest, ModesTileUserActionInteractorTest
Test: Click on modes tile in the QS -> verify that detailed view is
shown.

Change-Id: I2abbe4aa44473a65dd6f79a981a81a6576dcd62d