add husky with precommit hook for linting FE code (#16515)

.husky/.gitignore

@@ -0,0 +1 @@
+_

.husky/pre-commit

@@ -0,0 +1,4 @@
+#!/bin/sh
+. "$(dirname "$0")/_/husky.sh"
+
+yarn precommit

package.json

@@ -156,7 +156,8 @@
     "webpack-postcss-tools": "^1.1.2",
     "xhr-mock": "^2.4.1",
     "xlsx": "^0.16.8",
-    "yaml-lint": "^1.2.4"
+    "yaml-lint": "^1.2.4",
+    "husky": "^6.0.0"
   },
   "scripts": {
     "concurrently": "yarn && concurrently --kill-others -p name",
@@ -203,7 +204,8 @@
     "test-cypress-open": "./bin/build-for-test && yarn test-cypress-no-build --open",
     "test-cypress-open-no-backend": "E2E_HOST='http://localhost:3000' yarn test-cypress-no-build --open",
     "test-cypress-no-build": "yarn && CONFIG_FILE=frontend/test/__support__/e2e/cypress.json babel-node ./frontend/test/__runner__/run_cypress_tests.js",
-    "test-cypress-smoketest": "yarn test-cypress-no-build --folder frontend/test/metabase-smoketest"
+    "test-cypress-smoketest": "yarn test-cypress-no-build --folder frontend/test/metabase-smoketest",
+    "prepare": "husky install"
   },
   "lint-staged": {
     "frontend/**/*.{js,jsx,css}": [

yarn.lock

@@ -6838,6 +6838,11 @@ humanize-plus@^1.8.1:
   resolved "https://registry.yarnpkg.com/humanize-plus/-/humanize-plus-1.8.2.tgz#a65b34459ad6367adbb3707a82a3c9f916167030"
   integrity sha1-pls0RZrWNnrbs3B6gqPJ+RYWcDA=
 
+husky@^6.0.0:
+  version "6.0.0"
+  resolved "https://registry.yarnpkg.com/husky/-/husky-6.0.0.tgz#810f11869adf51604c32ea577edbc377d7f9319e"
+  integrity sha512-SQS2gDTB7tBN486QSoKPKQItZw97BMOd+Kdb6ghfpBc0yXyzrddI0oDV5MkDAbuB4X2mO3/nj60TRMcYxwzZeQ==
+
 icepick@2.3.0:
   version "2.3.0"
   resolved "https://registry.yarnpkg.com/icepick/-/icepick-2.3.0.tgz#1d1b0b28b80c1ff720a1f62359dab46392806f5c"