Add dashboard UID auto-generation and Gitea CI workflow

environments/modules/grafana_contact_points/outputs.tf

@@ -0,0 +1,4 @@
+output "contact_point_ids" {
+  description = "Mapping of contact point names to their IDs"
+  value = { for k, v in grafana_contact_point.contact_points : k => v.id }
+}