The e2e suite started the runner in-process and never exercised failing jobs. This adds a scenario that builds the binary and drives `register` then `daemon` against the Gitea fixture, and one for failed, skipped, continue-on-error and timed-out jobs.
Verified locally against gitea/gitea:main-nightly.
Assisted-by: Codet:codet
Reviewed-on: https://gitea.com/gitea/runner/pulls/1346
Reviewed-by: Zettat123 <39446+zettat123@noreply.gitea.com>
