Add android-ex-camera2 static java library to PDK.
Add android-ex-camera2 static java library to PDK.

Library is located frameworks/ex/camera2/public.
This is required to allow pdk/apps/CameraITS to build in the PDK.

Bug: 10337323
Change-Id: I5b835134012f90462a70b9e38b69c3168df00cfd

xorware/android_build,xorware/android_build,xorware/android_build,xorware/android_build,xorware/android_build