feat(tekton): support matching pruns via labels

Implement annotation-based PipelineRun to label matching functionality:

- Add `pipelinesascode.tekton.dev/on-label` annotation for label-based
  PipelineRun triggers
- Support label matching on GitHub, Gitea, and GitLab providers
- Implement immediate PipelineRun triggering when labels are added
- Enable re-triggering of PipelineRuns on commit updates with existing labels
- Provide access to Pull Request labels via `{{ pull_request_labels }}`
  dynamic variable

Supported providers:
- GitHub
- Gitea
- GitLab

Limitations:
- Not supported on Bitbucket Cloud and Bitbucket Server

https://issues.redhat.com/browse/SRVKP-5950

Signed-off-by: Chmouel Boudjnah <[email protected]>

docs/content/docs/guide/matchingevents.md

@@ -214,6 +214,7 @@ PipelineRun.
 ## Matching PipelineRun to a Pull Request labels
 
 {{< tech_preview "Matching PipelineRun to a Pull-Request label" >}}
+{{< support_matrix github_app="true" github_webhook="true" gitea="true" gitlab="true" bitbucket_cloud="false" bitbucket_server="false" >}}
 
 Using the annotation `pipelinesascode.tekton.dev/on-label`, you can match a
 PipelineRun to a Pull Request label. For example, if you want to match the

pkg/provider/github/status.go

@@ -328,8 +328,8 @@ func (v *Provider) createStatusCommit(ctx context.Context, runevent *info.Event,
 	if opscomments.IsAnyOpsEventType(eventType.String()) {
 		eventType = triggertype.PullRequest
 	}
-	if (status.Status == "completed" ||
-		(status.Status == "queued" && status.Title == pendingApproval)) &&
+
+	if (status.Status == "completed" || (status.Status == "queued" && status.Title == pendingApproval)) &&
 		status.Text != "" && eventType == triggertype.PullRequest {
 		_, _, err = v.Client.Issues.CreateComment(ctx, runevent.Organization, runevent.Repository,
 			runevent.PullRequestNumber,