[Dev option] Move DesktopModesStatus to wm/shell/shared/desktopmode from
wm/shell/shared/

Test: not needed, just refactoring. mp droid builds
Bug: 348193756
Flag: EXEMPT just refactoring

Change-Id: Iabf43521f673afb48b5dc6a2eb588002ff24dbb6
24 files changed