feat: check for correct version

lib/data/services/auth_client.dart

@@ -66,4 +66,23 @@ class AuthClient {
       client.close();
     }
   }
+
+  Future<Result<int>> getRemoteApiVersion() async {
+    final client = http.Client();
+    try {
+      final response = await client.get(
+        Uri.parse("https://$apiBasePath/version"),
+      );
+      if (response.statusCode == 200) {
+        final json = jsonDecode(response.body) as int;
+        return Result.ok(json);
+      } else {
+        throw "Something wrong happened";
+      }
+    } catch (e) {
+      return Result.error(Exception(e));
+    } finally {
+      client.close();
+    }
+  }
 }