feat: add "Own Work" license

fixtures/sample/license.json

@@ -77,5 +77,15 @@
       "identifier": "all-rights-reserved",
       "url": ""
     }
+  },
+  {
+    "model": "program.license",
+    "pk": 9,
+    "fields": {
+      "name": "Own Work",
+      "identifier": "own-work",
+      "requires_express_permission_for_publication": false,
+      "url": ""
+    }
   }
-]
\ No newline at end of file
+]