support v1 for sign and verify command

[Yongxuanzhang]

Changes

This commit adds v1 support for sign and verify.

close https://github.com/tektoncd/cli/issues/2214

Submitter Checklist

These are the criteria that every PR should meet, please check them off as you review them:

• [x] Includes tests (if functionality changed/added)
• [ ] Run the code checkers with make check
• [ ] Regenerate the manpages, docs and go formatting with make generated
• [x] Commit messages follow commit message best practices

See the contribution guide for more details.

Release Notes

tkn supports v1 Task and Pipeline sign and verify