move TIoPollThread out and use it in TServer

the previous IoCtx was never being polled

src/TIoPollThread.cpp

@@ -0,0 +1,37 @@
+// BeamMP, the BeamNG.drive multiplayer mod.
+// Copyright (C) 2024 BeamMP Ltd., BeamMP team and contributors.
+//
+// BeamMP Ltd. can be contacted by electronic mail via contact@beammp.com.
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published
+// by the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+#include "TIoPollThread.h"
+
+TIoPollThread::TIoPollThread()
+    : mWorkGuard(boost::asio::make_work_guard(mIoCtx))
+    , mThread([this](std::stop_token StopToken) {
+        while (!StopToken.stop_requested()) {
+            try {
+                mIoCtx.run();
+                break;
+            } catch (...) {
+                mIoCtx.restart();
+            }
+        }
+    }) { }
+
+TIoPollThread::~TIoPollThread() {
+    mWorkGuard.reset();
+    mIoCtx.stop();
+}