message: Add back catalog model and catalog plugin react
diff: "clean": "backstage-cli clean"
  },
  "dependencies": {
  + "@backstage/catalog-model": "^0.9.10",
  "@backstage/core-components": "^0.8.6",
  "@backstage/core-plugin-api": "^0.6.0",
  + "@backstage/plugin-catalog-react": "^0.6.12",
  "@backstage/theme": "^0.2.14",
  "@material-ui/core": "^4.12.2",
  "@material-ui/icons": "^4.9.1",
  