message: add backtage config package to deps
diff: "@backstage/catalog-model": "^0.8.0",
  "@backstage/plugin-catalog-react": "^0.2.0",
  "@backstage/search-common": "^0.1.1",
  + "@backstage/config": "^0.1.5",
  "@backstage/theme": "^0.2.8",
  "@material-ui/core": "^4.11.0",
  "@material-ui/icons": "^4.9.1",
  