Create a secondary catalog for other schemas not yet in SCDL

other-catalog.json

+{
+  "$schema": "https://opendataschema.frama.io/catalog/schema-catalog.json",
+  "version": 1,
+  "schemas": [
+    {
+      "name": "lieux-covoiturage",
+      "repo_url": "https://github.com/etalab/schema-lieux-covoiturage",
+      }
+    },
+    {
+      "name": "decp-dpa",
+      "repo_url": "https://github.com/etalab/schema-decp-dpa",
+      }
+    }
+  ]
+}
\ No newline at end of file