Use run-name and evaluate workflow variables (#34301)

This addresses https://github.com/go-gitea/gitea/issues/34247
depends on https://gitea.com/gitea/act/pulls/137

I couldn't find any previous implementation for `run-name` support on
workflows so I created one.

Key points:
All dispatched workflows, scheduled workflows and detected workflows
(from different hooks) will use and evaluate `run-name` if exists, with
the corresponding gitea context and variables. This will be used as the
Action run title and replace the default commit message being used
today.

Had to change act package jobparser (see link above)
and create two helpers
3a1320c70d/models/actions/utils.go (L86)
and
3a1320c70d/services/actions/context.go (L169)
to pass the correct types to
[GenerateGiteaContext](https://github.com/go-gitea/gitea/pull/34301/files#diff-9c9c27cb61a33e55ad33dc2c2e6a3521957a3e5cc50ddf652fdcd1def87b044dR86)
and
[WithGitContext](65c232c4a5/pkg/jobparser/jobparser.go (L84))
respectively.

<img width="1336" alt="Screenshot 2025-04-28 at 17 13 01"
src="https://github.com/user-attachments/assets/73cb03d0-23a0-4858-a466-bbf0748cea98"
/>

models/actions/utils.go

@@ -82,3 +82,22 @@ func calculateDuration(started, stopped timeutil.TimeStamp, status Status) time.
 	}
 	return timeSince(s).Truncate(time.Second)
 }
+
+// best effort function to convert an action schedule to action run, to be used in GenerateGiteaContext
+func (s *ActionSchedule) ToActionRun() *ActionRun {
+	return &ActionRun{
+		Title:         s.Title,
+		RepoID:        s.RepoID,
+		Repo:          s.Repo,
+		OwnerID:       s.OwnerID,
+		WorkflowID:    s.WorkflowID,
+		TriggerUserID: s.TriggerUserID,
+		TriggerUser:   s.TriggerUser,
+		Ref:           s.Ref,
+		CommitSHA:     s.CommitSHA,
+		Event:         s.Event,
+		EventPayload:  s.EventPayload,
+		Created:       s.Created,
+		Updated:       s.Updated,
+	}
+}