Add WIT bundle functionality#367

Draft

jsnctl wants to merge 7 commits intospiffe:mainfrom

jsnctl:jsnctl/wit-bundle

Commits on Oct 28, 2025

Adds witbundle
Jason Costello
committed
Fixing typo and comment formatting
Jason Costello
committed
Remaining s/jwtbundle/witbundle fixes
Jason Costello
committed
And a few more s/JWT/WIT
Jason Costello
committed
Adds distinct CA attributes for WIT, fixes test to use these
Jason Costello
committed
[From review] Move implementation to exp/ directory
Jason Costello
committed
[From review] Adds godoc for new exp package
Jason Costello
committed