Reland "Let WM shell set launch display area per params"

There are needs in foldables and new split screen to route new tasks
with certain activity type and windowing mode to specific display areas.
This CL fulfills this need.

Bug: 175140202
Change-Id: Ia76c063e4f5c76a5f8f59b824c2a8c6b4129b0d4
Test: atest TaskLaunchParamsModifierTests