feat(tgbot-back): Add functions for processing user authentication

modules/bot/back/include/AuthImpersonation.hpp

@@ -0,0 +1,35 @@
+// AuthImpersonationClient.hpp
+
+#pragma once
+
+#include <memory>
+#include <string>
+#include <stdexcept>
+#include <cstdlib>
+#include <map>
+#include <cpprest/asyncrt_utils.h> 
+#include "AuthClient/ApiClient.h"
+#include "AuthClient/ApiConfiguration.h"
+#include "AuthClient/api/AuthApi.h"     
+#include "AuthClient/model/GetImpersonationToken_request.h"
+#include "AuthClient/model/GetImpersonationToken_200_response.h"
+
+
+namespace nyanimed {
+
+class AuthImpersonationClient {
+public:
+    AuthImpersonationClient();
+
+    // Потокобезопасный вызов — не модифицирует состояние
+    pplx::task<std::shared_ptr<nyanimed::meow::auth::model::GetImpersonationToken_200_response>>
+    getImpersonationToken(int64_t userId) const;
+
+private:
+    std::string m_baseUrl;
+    std::string m_authToken;
+    std::shared_ptr<nyanimed::meow::auth::api::ApiClient> m_apiClient;
+    std::shared_ptr<nyanimed::meow::auth::api::AuthApi> m_authApi;
+};
+
+} // namespace nyanimed