message: Add catalog-model dep
diff: "dependencies": {
  "@backstage/core": "^0.1.1-alpha.6",
  "@backstage/theme": "^0.1.1-alpha.6",
  + "@backstage/catalog-model": "^0.1.1-alpha.6",
  "@material-ui/core": "^4.9.1",
  "@material-ui/icons": "^4.9.1",
  "@material-ui/lab": "4.0.0-alpha.45",
  