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

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

src/providers/twitch/eventsub/SubscriptionRequest.cpp

@@ -0,0 +1,37 @@
+#include "providers/twitch/eventsub/SubscriptionRequest.hpp"
+
+#include <QDebug>
+
+namespace chatterino::eventsub {
+
+QDebug &operator<<(QDebug &dbg, const SubscriptionRequest &v)
+{
+    dbg << "eventsub::SubscriptionRequest{ type:" << v.subscriptionType
+        << "version:" << v.subscriptionVersion;
+    if (!v.conditions.empty())
+    {
+        dbg << "conditions:[";
+        for (const auto &[conditionKey, conditionValue] : v.conditions)
+        {
+            dbg << conditionKey << "=" << conditionValue << ',';
+        }
+        dbg << ']';
+    }
+    dbg << '}';
+    return dbg;
+}
+
+bool operator==(const SubscriptionRequest &lhs, const SubscriptionRequest &rhs)
+{
+    return std::tie(lhs.subscriptionType, lhs.subscriptionVersion,
+                    lhs.conditions) == std::tie(rhs.subscriptionType,
+                                                rhs.subscriptionVersion,
+                                                rhs.conditions);
+}
+
+bool operator!=(const SubscriptionRequest &lhs, const SubscriptionRequest &rhs)
+{
+    return !(lhs == rhs);
+}
+
+}  // namespace chatterino::eventsub