Evaluate run-name field for workflows (#137)

To support https://github.com/go-gitea/gitea/pull/34301

Reviewed-on: https://gitea.com/gitea/act/pulls/137
Reviewed-by: Lunny Xiao <xiaolunwen@gmail.com>
Co-authored-by: badhezi <zlilaharon@gmail.com>
Co-committed-by: badhezi <zlilaharon@gmail.com>

pkg/jobparser/model.go

@@ -16,6 +16,7 @@ type SingleWorkflow struct {
 	RawJobs        yaml.Node         `yaml:"jobs,omitempty"`
 	Defaults       Defaults          `yaml:"defaults,omitempty"`
 	RawPermissions yaml.Node         `yaml:"permissions,omitempty"`
+	RunName        string            `yaml:"run-name,omitempty"`
 }
 
 func (w *SingleWorkflow) Job() (string, *Job) {