Add webhook name field to improve webhook identification (#37025) (#37040)

Add an optional Name field to webhooks so users can give them
human-readable labels instead of relying only on URLs. The webhook
overview page now displays names when available, or falls back to the
URL for unnamed webhooks.

Fixes #37025

---------

Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

models/migrations/migrations.go

@@ -404,6 +404,7 @@ func prepareMigrationTasks() []*migration {
 		newMigration(327, "Add disabled state to action runners", v1_26.AddDisabledToActionRunner),
 		newMigration(328, "Add TokenPermissions column to ActionRunJob", v1_26.AddTokenPermissionsToActionRunJob),
 		newMigration(329, "Add unique constraint for user badge", v1_26.AddUniqueIndexForUserBadge),
+		newMigration(330, "Add name column to webhook", v1_26.AddNameToWebhook),
 	}
 	return preparedMigrations
 }