chore: update vscode config

.vscode/extensions.json

@@ -0,0 +1,3 @@
+{
+  "recommendations": ["esbenp.prettier-vscode", "ms-python.black-formatter"]
+}

.vscode/settings.json

@@ -15,5 +15,19 @@
     "svgs",
     "vaxei"
   ],
-  "python.linting.mypyEnabled": true
+
+  "editor.formatOnSave": true,
+
+  "[markdown]": {
+    "editor.defaultFormatter": "esbenp.prettier-vscode"
+  },
+  "[json]": {
+    "editor.defaultFormatter": "esbenp.prettier-vscode"
+  },
+  "[jsonc]": {
+    "editor.defaultFormatter": "esbenp.prettier-vscode"
+  },
+  "[python]": {
+    "editor.defaultFormatter": "ms-python.black-formatter"
+  }
 }