feat: add initial experimental Twitch Eventsub support (#5837)

Co-authored-by: nerix <nerixdev@outlook.de>

src/util/ThreadGuard.hpp

@@ -14,6 +14,15 @@ struct ThreadGuard {
     mutable std::optional<std::thread::id> threadID;
 #endif
 
+    ThreadGuard() = default;
+
+    explicit ThreadGuard(std::thread::id threadID_)
+#ifndef NDEBUG
+        : threadID(threadID_)
+#endif
+    {
+    }
+
     inline void guard() const
     {
 #ifndef NDEBUG