Widevine internal BCC extraction tool to extract CSR v3 for testing
purpose. The difference it has from the factory tool is it doesn't rely
on Widevine IRPC HAL.
It just extracts BCC/CSR in the specified format from cli.
Test: Extract CSR v3 on Pixel 7 and upload
Bug: 268246995
Change-Id: I52abe09f991c89c6e7601bcef4d980f24c020c9f
5e24549b1a