Log various TaskView properties in TaksContainer.itemInfo

- Extracted itemInfo creation in to TaskViewItemInfo and added a test
- Created a standalone atom for TaskView, logging data we want (please refer to the bug)
- Convert TaskView atom to StatsLog data in StatsLogCompatManager
- Simplified DesktopSystemShortcutTest and ExternalDisplaySystemShortcutTest to avoid extra testing on DesktopModeStatus

Fix: 341320349
Test: TaskViewItemInfoTest, DesktopSystemShortcutTest, ExternalDisplaySystemShortcutTest
Flag: EXEMPT logging
Change-Id: Icf04ff2b1670c3f3d5f6a66f99c0d28314efaf21