Refactor 7TV EventAPI (#4342)

* refactor: remove file prefix

* refactor: put eventapi into a namespace

* refactor: support multiple conditions

* fix: handle ack

* docs: add changelog entry

* fix: unsubscribe in destructor

* fix: naming of parameter

* fix: namespaces

* chore: casing

* fix: missing namespace

---------

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

src/providers/seventv/SeventvEmotes.hpp

@@ -10,9 +10,12 @@
 namespace chatterino {
 
 class Channel;
-struct SeventvEventAPIEmoteAddDispatch;
-struct SeventvEventAPIEmoteUpdateDispatch;
-struct SeventvEventAPIEmoteRemoveDispatch;
+
+namespace seventv::eventapi {
+    struct EmoteAddDispatch;
+    struct EmoteUpdateDispatch;
+    struct EmoteRemoveDispatch;
+}  // namespace seventv::eventapi
 
 // https://github.com/SevenTV/API/blob/a84e884b5590dbb5d91a5c6b3548afabb228f385/data/model/emote-set.model.go#L29-L36
 enum class SeventvActiveEmoteFlag : int64_t {
@@ -86,7 +89,7 @@ public:
      */
     static boost::optional<EmotePtr> addEmote(
         Atomic<std::shared_ptr<const EmoteMap>> &map,
-        const SeventvEventAPIEmoteAddDispatch &dispatch);
+        const seventv::eventapi::EmoteAddDispatch &dispatch);
 
     /**
      * Updates an emote in this `map`.
@@ -97,7 +100,7 @@ public:
      */
     static boost::optional<EmotePtr> updateEmote(
         Atomic<std::shared_ptr<const EmoteMap>> &map,
-        const SeventvEventAPIEmoteUpdateDispatch &dispatch);
+        const seventv::eventapi::EmoteUpdateDispatch &dispatch);
 
     /**
      * Removes an emote from this `map`.
@@ -108,7 +111,7 @@ public:
      */
     static boost::optional<EmotePtr> removeEmote(
         Atomic<std::shared_ptr<const EmoteMap>> &map,
-        const SeventvEventAPIEmoteRemoveDispatch &dispatch);
+        const seventv::eventapi::EmoteRemoveDispatch &dispatch);
 
     /** Fetches an emote-set by its id */
     static void getEmoteSet(