Support loading VNDK ABI dump in JSON format

- Add JsonToIRReader which uses jsoncpp to convert JSON to IR.
- Move IsPresentInExportedHeaders to class TextFormatToIRReader.

Bug: 112877706
Test: ./test.py
Change-Id: Ib4382a8d4aa67ec4640cecd1fa433ffdf88a365a
5 files changed