Merge pull request #8113 from metabase/yarn-ci

Add 'yarn ci' script

package.json

@@ -189,7 +189,11 @@
       "echo $npm_execpath | grep -q yarn || echo '\\033[0;33mSorry, npm is not supported. Please use Yarn (https://yarnpkg.com/).\\033[0m'",
     "prettier": "prettier --write 'frontend/**/*.{js,jsx,css}'",
     "docs":
-      "documentation build -f html -o frontend/docs frontend/src/metabase-lib/lib/**"
+      "documentation build -f html -o frontend/docs frontend/src/metabase-lib/lib/**",
+    "ci": "yarn ci-frontend && yarn ci-backend",
+    "ci-frontend": "yarn lint && yarn flow && yarn test",
+    "ci-backend":
+      "lein docstring-checker && lein bikeshed && lein eastwood && lein test"
   },
   "lint-staged": {
     "frontend/**/*.{js,jsx,css}": ["prettier --write", "git add"]