User can get the name of the runner that executed the specified job.
![image](/attachments/61328f68-7223-4345-85c7-ac08781e81db)
Co-authored-by: Zettat123 <zettat123@gmail.com>
Reviewed-on: https://gitea.com/gitea/act_runner/pulls/37
Reviewed-by: Jason Song <i@wolfogre.com>
Reviewed-by: Lunny Xiao <xiaolunwen@gmail.com>
Co-authored-by: Zettat123 <zettat123@noreply.gitea.io>
Co-committed-by: Zettat123 <zettat123@noreply.gitea.io>