dont add test-output to git

test/test-output/missing-file.json

-{
-  "mapInfo": {},
-  "result": {
-    "exitGraph": "digraph G {\n\n}\n",
-    "mapLints": {},
-    "missingAssets": [],
-    "missingDeps": [
-      {
-        "depFatal": true,
-        "entrypoint": "main.json",
-        "neededBy": []
-      }
-    ]
-  },
-  "severity": "Info"
-}