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/ffz/FfzEmotes.hpp

@@ -1,9 +1,9 @@
 #pragma once
 
-#include "boost/optional.hpp"
 #include "common/Aliases.hpp"
 #include "common/Atomic.hpp"
-#include "providers/twitch/TwitchChannel.hpp"
+
+#include <boost/optional.hpp>
 
 #include <memory>
 
@@ -12,12 +12,10 @@ namespace chatterino {
 struct Emote;
 using EmotePtr = std::shared_ptr<const Emote>;
 class EmoteMap;
+class Channel;
 
 class FfzEmotes final
 {
-    static constexpr const char *globalEmoteApiUrl =
-        "https://api.frankerfacez.com/v1/set/global";
-
 public:
     FfzEmotes();