workflow: setup commit hooks

package.json

@@ -8,12 +8,27 @@
     "build": "node scripts/build.js",
     "lint": "prettier --write --parser typescript 'packages/*/src/**/*.ts'"
   },
+  "gitHooks": {
+    "pre-commit": "lint-staged",
+    "commit-msg": "node scripts/verifyCommit.js"
+  },
+  "lint-staged": {
+    "*.js": [
+      "prettier --write",
+      "git add"
+    ],
+    "*.ts": [
+      "prettier --parser=typescript --write",
+      "git add"
+    ]
+  },
   "devDependencies": {
     "chalk": "^2.4.1",
     "dts-bundle": "^0.7.3",
     "execa": "^1.0.0",
     "fs-extra": "^7.0.0",
     "lerna": "^3.4.0",
+    "lint-staged": "^7.2.2",
     "minimist": "^1.2.0",
     "prettier": "^1.14.2",
     "rollup": "^0.65.0",
@@ -21,6 +36,7 @@
     "rollup-plugin-replace": "^2.0.0",
     "rollup-plugin-terser": "^2.0.2",
     "rollup-plugin-typescript2": "^0.17.0",
-    "typescript": "^3.0.3"
+    "typescript": "^3.0.3",
+    "yorkie": "^2.0.0"
   }
 }