Made room state event collapsing configurable, expose it in the developer menu. Allow the UserSetting property wrappers to only store values in memory (+11 squashed commits)

Squashed commits:
[42e45fc] Even more tweaks following code review
[5dcd5be] Add swift-algoritms and switch bubbling detection to its `chunked` method
[4ac70ed] Move the groupBy implementation to Collection instead of Array
[6aeffc3] Tweaks following code review
[0ca5ac2] Bubbles working again, grouping computed closer to the UI level
[3a66030] Refactor how timeline items are built in the RoomTimelineController
[57d51e9] Remove grouping from timeline items
[8608950] Remove the RoomTimelineViewFactory, update the GroupRoomTimelineView
[9e52e61] Add array grouping extension, unit tests and switched the timeline controller to it
[7d213a1] First attempt
[90bb1d7] Remove now unused `RoomTimelineController` `updatedTimelineItem` calback

ElementX/Sources/Services/Timeline/TimelineItemProxy.swift

@@ -32,20 +32,6 @@ enum TimelineItemProxy {
             self = .unknown(item)
         }
     }
-
-    func canBeGrouped(with previousItemProxy: TimelineItemProxy) -> Bool {
-        guard case let .event(selfEventItemProxy) = self, case let .event(previousEventItemProxy) = previousItemProxy else {
-            return false
-        }
-        
-        // State events aren't rendered as messages so shouldn't be grouped.
-        if selfEventItemProxy.isRoomState || previousEventItemProxy.isRoomState {
-            return false
-        }
-        
-        //  can be improved by adding a date threshold
-        return previousEventItemProxy.reactions.isEmpty && selfEventItemProxy.sender == previousEventItemProxy.sender
-    }
 }
 
 /// The delivery status for the item.