DngCreator: Add thumbnail TIFF tags in subIFD1

Always keep the main image TIFF tags as part of IFD0.
If thumbnail is present, then insert and use subIFD1
for all additional thumbnail related tags.

Bug: 194703299
Test:  atest -c
cts/tests/camera/src/android/hardware/camera2/cts/DngCreatorTest.java

Change-Id: Ia50ff98f16871abf6d774506133803c251b46d69