Foldable State Events

Implement folding sections for multiple consecutive state events. This also reworks some of the aggregated text output:

- Only new days cause a new section
- The aggregated text starts with either a single username or n users
- If the same user did the same action mutltiple times it will be in the aggregated text a user did x n times
- When there are multiple authors in a block with multiple state event types it will use or rather than and before the last event. e.g 3 user left the room or joined the room.

Folded

![image](/uploads/17141ed5e1f2e0e3539523a082275976/image.png)

Unfolded

![image](/uploads/1d5db5804da457b921544cc81099997d/image.png)

Implements network/neochat#90

src/neochatroom.h

@@ -249,6 +249,7 @@ public:
     [[nodiscard]] QString avatarMediaId() const;
 
     [[nodiscard]] QString eventToString(const Quotient::RoomEvent &evt, Qt::TextFormat format = Qt::PlainText, bool removeReply = true) const;
+    [[nodiscard]] QString eventToGenericString(const Quotient::RoomEvent &evt) const;
 
     Q_INVOKABLE [[nodiscard]] bool containsUser(const QString &userID) const;
     Q_INVOKABLE [[nodiscard]] bool isUserBanned(const QString &user) const;