Add device config for experiment of orientation opt-out

With command: adb shell device_config put window_manager \
  opt_out_ignore_activity_orientation_request_list \
  com.pkg1,com.pkg2,com.pkg3
The activity can keep its fixed orientation if
ignore_activity_orientation_request is enabled.

Flag: EXEMPT disabled code
Test: presubmit
Bug: 357141415
Change-Id: I6534bfcadc8c59a29a96ba12929f1ef9b13f4938