dev: added Prettier config

workspace.code-workspace

@@ -4,5 +4,10 @@
             "path": "."
         }
     ],
-	"settings": {}
+    "settings": {
+        "editor.defaultFormatter": "esbenp.prettier-vscode",
+        "editor.formatOnSave": true,
+        "prettier.useTabs": false,
+        "prettier.printWidth": 120,
+    }
 }