Add drag to desktop transition params customization

- Add SystemProperties transition propeties to easily modify the
  transition params.
- More details on the configuration and usage are available at go/dw-transitions-cutomization

Bug: 356843260
Test: manual, atest WMShellUnitTests:DragToDesktopTransitionHandlerTest
Flag: com.android.window.flags.enable_desktop_windowing_transitions
Change-Id: Ic6d5b5d430a465f96e34fbc751093950c70adb1e