Feature: console command to change authorized keys

src/network/network_server.cpp

@@ -2243,6 +2243,18 @@ void NetworkPrintClients()
 	}
 }
 
+/**
+ * Get the public key of the client with the given id.
+ * @param client_id The id of the client.
+ * @return View of the public key, which is empty when the client does not exist.
+ */
+std::string_view NetworkGetPublicKeyOfClient(ClientID client_id)
+{
+	auto socket = NetworkClientSocket::GetByClientID(client_id);
+	return socket == nullptr ? "" : socket->GetPeerPublicKey();
+}
+
+
 /**
  * Perform all the server specific administration of a new company.
  * @param c  The newly created company; can't be nullptr.