Script to help parse javac commandline

Useful to use it in a "soong-rerun" script generated by
extract-last-soong-commands.py.

See the comment in the script for how to use it.

Basically, this script does:
- Dump entries of each jar file in the command line
- Dump rsp file content

Sample output: https://omakoto.users.x20web.corp.google.com/files/2025/05/08/20250508-130241.txt

Bug: 292141694
Bug: 413308573
Test: Manual test running the script
Flag: EXEMPT adding script only
Change-Id: I08e7e245ba4ca22515ee560d529f4e4d85f18e0b