camera2: Update CameraService for HAL1 shim.

Updates the camera service to handle shim connections.

Changes include:
- Adds begin/end configure binder calls.
- Adds cache for shim client static camera metadata.
- Implements basic getCameraCharacteristic functionality for shim clients.

Bug: 15116722
Bug: 15117269

Change-Id: I510c5888ca15f8e7d3b8ed1680ff1c7f8f514744
diff --git a/services/camera/libcameraservice/api2/CameraDeviceClient.h b/services/camera/libcameraservice/api2/CameraDeviceClient.h
index 0b37784..9981dfe 100644
--- a/services/camera/libcameraservice/api2/CameraDeviceClient.h
+++ b/services/camera/libcameraservice/api2/CameraDeviceClient.h
@@ -76,6 +76,10 @@
                                         /*out*/
                                         int64_t* lastFrameNumber = NULL);
 
+    virtual status_t beginConfigure();
+
+    virtual status_t endConfigure();
+
     // Returns -EBUSY if device is not idle
     virtual status_t      deleteStream(int streamId);