Update editor config formatting options

Co-authored-by: Arran Hobson Sayers <ahobsonsayers@gmail.com>

.vscode/extensions.json

@@ -0,0 +1,7 @@
+{
+  "recommendations": [
+    "EditorConfig.EditorConfig",
+    "esbenp.prettier-vscode",
+    "octref.vetur"
+  ]
+}

.vscode/settings.json

@@ -17,5 +17,11 @@
   "editor.formatOnSave": true,
   "editor.detectIndentation": true,
   "editor.tabSize": 2,
-  "javascript.format.semicolons": "remove"
+  "javascript.format.semicolons": "remove",
+  "[javascript][json][jsonc]": {
+    "editor.defaultFormatter": "esbenp.prettier-vscode"
+  },
+  "[vue]": {
+    "editor.defaultFormatter": "octref.vetur"
+  }
 }