Add action feed for new release (#12324)

* Add action feed for new release

Signed-off-by: a1012112796 <1012112796@qq.com>

* fix lint

* Apply suggestions from code review

* Add ReleaseID to the action table
* Remove error message
* Fold the attachments download list

* remove attchment download list

* simplify code

* fix create release from existing tag

* simplify ui

* translation change

* fix test

Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
Co-authored-by: Lauris BH <lauris@nix.lv>
Co-authored-by: techknowlogick <techknowlogick@gitea.io>

modules/templates/helper.go

@@ -640,6 +640,8 @@ func ActionIcon(opType models.ActionType) string {
 		return "check"
 	case models.ActionRejectPullRequest:
 		return "diff"
+	case models.ActionPublishRelease:
+		return "tag"
 	default:
 		return "question"
 	}