Screen Sharing: Setup basic screen share toolbar

Creates a new composable for the screen share toolbar containing the
radio button groups and various icons. The toolbar will be hooked up to
the view model and state in later CLs. Only large screen window & tab
sharing experience is included in the tool bar for DF2.

Screenshot: http://screen/6PirfrGQ5W9giLJ

Bug: 423707607
Test: Manual
Flag: com.android.systemui.large_screen_sharing
Change-Id: Id4784d19421e832ada3362dcf4c3be2f6e25e795