Include license information for vendor and host snapshots

In addition to the license text files, include license kinds
information to json file. Also, use the original paths of license
text files that are copied to NOTICE_FILES directory.
This will be used when generating snapshots from the snapshot build.

Bug: 271539873
Test: m vendor-snapshot
Change-Id: I0c0427bb66f2c1fca322d5554aa66220a3b62fb3