Add @types/lodash as a dependency

frontend/package.json

@@ -42,6 +42,7 @@
     "@nuxtjs/eslint-config-typescript": "^5.0.0",
     "@nuxtjs/eslint-module": "^2.0.0",
     "@nuxtjs/google-analytics": "^2.3.0",
+    "@types/lodash": "^4.14.168",
     "@vue/test-utils": "^1.0.3",
     "axios-mock-adapter": "^1.18.1",
     "babel-core": "7.0.0-bridge.0",

frontend/yarn.lock

@@ -1932,6 +1932,11 @@
   resolved "https://registry.yarnpkg.com/@types/linkify-it/-/linkify-it-2.1.0.tgz#ea3dd64c4805597311790b61e872cbd1ed2cd806"
   integrity sha512-Q7DYAOi9O/+cLLhdaSvKdaumWyHbm7HAk/bFwwyTuU0arR5yyCeW5GOoqt4tJTpDRxhpx9Q8kQL6vMpuw9hDSw==
 
+"@types/lodash@^4.14.168":
+  version "4.14.168"
+  resolved "https://registry.yarnpkg.com/@types/lodash/-/lodash-4.14.168.tgz#fe24632e79b7ade3f132891afff86caa5e5ce008"
+  integrity sha512-oVfRvqHV/V6D1yifJbVRU3TMp8OT6o6BG+U9MkwuJ3U8/CsDHvalRpsxBqivn71ztOFZBTfJMvETbqHiaNSj7Q==
+
 "@types/markdown-it@0.0.7":
   version "0.0.7"
   resolved "https://registry.yarnpkg.com/@types/markdown-it/-/markdown-it-0.0.7.tgz#75070485a3d8ad11e7deb8287f4430be15bf4d39"