Merge "Virtual stylus API" into main

core/api/system-current.txt

core/java/android/companion/virtual/IVirtualDevice.aidl

...java/android/companion/virtual/VirtualDeviceInternal.java

.../java/android/companion/virtual/VirtualDeviceManager.java

core/java/android/companion/virtual/flags.aconfig

core/java/android/hardware/input/VirtualStylus.java

...java/android/hardware/input/VirtualStylusButtonEvent.aidl

...java/android/hardware/input/VirtualStylusButtonEvent.java

core/java/android/hardware/input/VirtualStylusConfig.aidl

core/java/android/hardware/input/VirtualStylusConfig.java

...java/android/hardware/input/VirtualStylusMotionEvent.aidl

...java/android/hardware/input/VirtualStylusMotionEvent.java

...java/android/hardware/input/VirtualTouchDeviceConfig.java

...java/android/hardware/input/VirtualTouchscreenConfig.java

...com/android/server/companion/virtual/InputController.java

...m/android/server/companion/virtual/VirtualDeviceImpl.java

.../com_android_server_companion_virtual_InputController.cpp