feat(sdk): Introduce new API to retrieve raw JUMBF manifest from C2paReader#1625

magaylor wants to merge 4 commits intocontentauth:maincontentauth/c2pa-rs:mainfrom

magaylor:user/magaylor/20251120_add_raw_jumbf_extraction_to_readermagaylor/c2pa-rs:user/magaylor/20251120_add_raw_jumbf_extraction_to_readerCopy head branch name to clipboard