Linked to https://issues.redhat.com/browse/TKNECO-99, we want to enforce that tests ran on the tekton resource we pulled. Running tests for all task we pull doesn't scale, so we need to be able to trust tests were ran (and successfull)

This seems to be possible with in-toto: https://github.com/in-toto/attestation/blob/main/spec/predicates/test-result.md.

We need to figure out how we could generate those and validate them.