This tool was supposed to be used for internal debugging purpose on
Android devices. It already supports RKP uploading CSR format.
Extend this tool to support Widevine uploading format: JSON csr
and make this format as default output for AOSP (non-GMS) partners.
A later change will move it to its own aosp/ directory.
Test: run "wv_factory_extraction_tool json_csr" on Pixel 9
Bug: 414642286
Change-Id: I9cf4e9696d32201cc1ad70b6bee7932f7126a4ba
1f77085571