Add team creation, team join and debug login screen

shared/utils/error.ts

@@ -0,0 +1,11 @@
+export function parseError(e: unknown): string {
+  if (e instanceof Error && e.name === 'FetchError' && 'statusCode' in e) {
+    switch (e.statusCode) {
+      case 401:
+        return 'error.401';
+      case 404:
+        return 'error.404';
+    }
+  }
+  return 'error.default';
+}