add mdb feed for Sutubal, tld to be redirected later in retool

Author: ianktc

catalogs/sources/gtfs/schedule/pt-setubal-barreiro-gtfs-3186.json

@@ -0,0 +1,23 @@
+{
+    "mdb_source_id": 3186,
+    "data_type": "gtfs",
+    "provider": "Transportes Colectivos do Barreiro",
+    "name": "Transportes Colectivos do Barreiro",
+    "location": {
+        "country_code": "PT",
+        "subdivision_name": "Setúbal",
+        "municipality": "Barreiro",
+        "bounding_box": {
+            "minimum_latitude": null,
+            "maximum_latitude": null,
+            "minimum_longitude": null,
+            "maximum_longitude": null,
+            "extracted_on": "2023-02-23T21:00:22+00:00"
+        }
+    },
+    "urls": {
+        "direct_download": "https://backend.tcbarreiro.pt/download-gtfs",
+        "latest": "https://storage.googleapis.com/storage/v1/b/mdb-latest/o/pt-setubal-barreiro-gtfs-3186.zip?alt=media",
+        "license": "https://dados.gov.pt/pt/datasets/gtfs-carris-metropolitana/"
+    }
+}