Add dash-component-plugins as a dev dependencies

Author: xhlulu

{{cookiecutter.project_shortname}}/package.json

@@ -34,6 +34,7 @@
     "@babel/preset-env": "^7.5.4",
     "@babel/preset-react": "^7.0.0",
     "@plotly/webpack-dash-dynamic-import": "^1.2.0",
+    "@plotly/dash-component-plugins": "^1.2.0",
     "babel-eslint": "^10.0.2",
     "babel-loader": "^8.0.6",
     "copyfiles": "^2.1.1",