Add provider file

Author: lrepolho

provider.json

@@ -0,0 +1,10 @@
+{
+    "data": {
+        "type": "registry-providers",
+        "attributes": {
+            "name": "postgresql",
+            "namespace": "immutable_",
+            "registry-name": "private"
+        }
+    }
+}