Add prettier config

Author: kavinphan

prettier.config.ts

@@ -0,0 +1,12 @@
+import { type Config } from "prettier";
+
+const config: Config = {
+  trailingComma: "all",
+  tabWidth: 2,
+  semi: true,
+  singleQuote: false,
+  arrowParens: "always",
+  useTabs: false,
+};
+
+module.exports = config;