chore(prettier): add config

Author: JetUni

prettier.config.js

@@ -0,0 +1,9 @@
+module.exports = {
+  arrowParens: 'always',
+  endOfLine: 'lf',
+  printWidth: 120,
+  singleQuote: true,
+  tabWidth: 2,
+  trailingComma: 'es5',
+  useTabs: false,
+};