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/widgets/helper/ChannelView.hpp

@@ -1,8 +1,6 @@
 #pragma once
 
 #include "common/FlagsEnum.hpp"
-#include "controllers/filters/FilterSet.hpp"
-#include "messages/Image.hpp"
 #include "messages/LimitedQueue.hpp"
 #include "messages/LimitedQueueSnapshot.hpp"
 #include "messages/Selection.hpp"
@@ -10,6 +8,7 @@
 #include "widgets/BaseWidget.hpp"
 
 #include <pajlada/signals/signal.hpp>
+#include <QMenu>
 #include <QPaintEvent>
 #include <QScroller>
 #include <QTimer>
@@ -43,6 +42,8 @@ class EffectLabel;
 struct Link;
 class MessageLayoutElement;
 class Split;
+class FilterSet;
+using FilterSetPtr = std::shared_ptr<FilterSet>;
 
 enum class PauseReason {
     Mouse,