Remove Unnecessary Includes in Headers (#4275)

* refactor: remove unnecessary includes in headers

* fix: formatting

* chore: changelog

* fix: scrollbar

* fix: suggestions and old appbase remains

* fix: suggestion

* fix: missing Qt forward declarations

* fix: another qt include

* fix: includes for precompiled-headers=off

* Add missing `<memory>` includes

* Add missing `#pragma once`

* Fix tests

Co-authored-by: Rasmus Karlsson <rasmus.karlsson@pajlada.com>

src/providers/RecentMessagesApi.cpp

@@ -1,10 +1,12 @@
-#include "RecentMessagesApi.hpp"
+#include "providers/RecentMessagesApi.hpp"
 
 #include "common/Channel.hpp"
 #include "common/Common.hpp"
 #include "common/Env.hpp"
 #include "common/NetworkRequest.hpp"
+#include "common/NetworkResult.hpp"
 #include "common/QLogging.hpp"
+#include "messages/Message.hpp"
 #include "providers/twitch/IrcMessageHandler.hpp"
 #include "providers/twitch/TwitchChannel.hpp"
 #include "providers/twitch/TwitchMessageBuilder.hpp"
@@ -16,6 +18,7 @@
 #include <QJsonArray>
 #include <QJsonObject>
 #include <QUrl>
+#include <QUrlQuery>
 
 namespace chatterino {