Introduce process configuration to WindowProcessController

Introduced the process config and adjusted mergedconfiguration
related calls. Such that we can override configuration for a process
when need to.

The potential use cases include:
1. Maintain process window bounds for the latest activity to override
the display info for legacy apps;
2. Override the display info for IME process to make sure the IME can be
shown with the correct display metrics.

ActivityManagerService:
- Use process configuration instead of the global configuration when
  it's for app.

ActivityStackSupervisor:
- Use process configuration when start activity.

WindowProcessController:
- Make it a ConfigurationContainer.

ActivityTaskManagerService:
- Add interface to get configuration for a process. If the process is a
  system process or non-existing process, return the global
  configuration.
- Return device configuration related to the process.
- Propagate configuration updates from Global to Process.

ActivityTaskManagerInternal:
- API to update configuration for IME process.

WindowManagerService/WindowManagerInternal:
- Propagate the process configuration change to wm.

WindowState:
- Use process configuration instead of global.

Test: go/wm-smoke
Test: servicestests will remain the same result as without this patch.
Bug: 113253755

Change-Id: I3660723352d2e8779d40528ae92d71f59ddbf1f1