Add clang-tidy target and fix problems

src/helpers/connect_server.c

@@ -27,7 +27,7 @@ helper_connect_tcp_server(char* host, uint16_t port)
     //res got filled out by getaddrinfo() for us
     s = socket(res->ai_family, res->ai_socktype, res->ai_protocol); //creating Socket
 
-    if ((status = connect(s, res->ai_addr, res->ai_addrlen)) != 0) {
+    if (connect(s, res->ai_addr, res->ai_addrlen) != 0) {
         LOGGER_ERR("connect() failed\n");
         freeaddrinfo(res);
         return -1;