perf(threads): implement adjust_thread_priority for macOS and add set_thread_name (#4605)

src/nvhttp.cpp

@@ -1056,6 +1056,7 @@ namespace nvhttp {
   }
 
   void start() {
+    platf::set_thread_name("nvhttp");
     auto shutdown_event = mail::man->event<bool>(mail::shutdown);
 
     auto port_http = net::map_port(PORT_HTTP);
@@ -1173,6 +1174,8 @@ namespace nvhttp {
 
     auto accept_and_run = [&](auto *http_server) {
       try {
+        std::string name = "nvhttp::" + std::to_string(http_server->config.port);
+        platf::set_thread_name(name);
         http_server->start();
       } catch (boost::system::system_error &err) {
         // It's possible the exception gets thrown after calling http_server->stop() from a different thread