Fix #25088
This PR adds the support for
[`pull_request_target`](https://docs.github.com/en/actions/using-workflows/events-that-trigger-workflows#pull_request_target)
workflow trigger. `pull_request_target` is similar to `pull_request`,
but the workflow triggered by the `pull_request_target` event runs in
the context of the base branch of the pull request rather than the head
branch. Since the workflow from the base is considered trusted, it can
access the secrets and doesn't need approvals to run.
Follow #23037
Fix [#22598
comment](https://github.com/go-gitea/gitea/issues/22958#issuecomment-1475763042)
Workflows with `pull_request` trigger event can't be triggered by
`pull_request_sync` event. This PR adds the `canGithubEventMatch`
function to check if a Github event can match any Gitea event. If the
Github event matches a Gitea event, the related workflows should be
triggered.
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Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
