style: formatting in VSCode

Use 4 spaces for tab indentation since swag fmt uses 4 spaces.

Author: morremeyer

.vscode/settings.json

@@ -2,5 +2,6 @@
   "go.useLanguageServer": true,
   "gopls": {
     "formatting.gofumpt": true
-  }
+  },
+  "editor.tabSize": 4
 }