ultrahdr: Renamed and disabled build targets

frameworks/native/libs/ultrahdr is deprecated and external/libultrahdr
is the new path for ultrahdr.
This CL renames and disables the build targets for now and after
sometime all the files will be deleted from frameworks/native/ultrahdr.

Bug: 313791883
Test: treehugger
Change-Id: I9487637b3258d631bf3d39dfb74d985384676bdd