[setup][s]-setup code formatting with prettier

- add husky and lint-stages for pre-commit hooks
 - format entire codebase using `yarn format`

config/jest/cssTransform.js

@@ -1,8 +1,8 @@
 module.exports = {
   process() {
-    return 'module.exports = {};'
+    return 'module.exports = {};';
   },
   getCacheKey() {
-    return 'cssTransform'
+    return 'cssTransform';
   },
-}
+};