Reply rendering (#861)

* Cleanup how we use message timeline items in preparation for rich reply rendering

* Expose reply details up to the UI level

* Render replies in the timeline (textual for now). Remove now unused AttributedStringBuilderComponent isReply flag.

* Move reply detail loading to when the item appears instead of when it's created.

* Fix unit tests

* Fetch event details also when the reply details are in the error state

* Tweaks following code review

* Localise emote bodies

* Fix replies not loading sometimes, use the current event identifier instead of the one being replied to

ElementX/Sources/Services/Room/RoomProxy.swift

@@ -428,6 +428,19 @@ class RoomProxy: RoomProxyProtocol {
         }
     }
     
+    func fetchDetails(for eventID: String) {
+        Task {
+            await Task.dispatch(on: .global()) {
+                do {
+                    MXLog.info("Fetching event details for \(eventID)")
+                    try self.room.fetchEventDetails(eventId: eventID)
+                } catch {
+                    MXLog.error("Failed fetching event details for \(eventID) with error: \(error)")
+                }
+            }
+        }
+    }
+    
     // MARK: - Private
     
     /// Force the timeline to load member details so it can populate sender profiles whenever we add a timeline listener

ElementX/Sources/Services/Room/RoomProxyProtocol.swift

@@ -102,6 +102,8 @@ protocol RoomProxyProtocol {
     func rejectInvitation() async -> Result<Void, RoomProxyError>
     
     func acceptInvitation() async -> Result<Void, RoomProxyError>
+    
+    func fetchDetails(for eventID: String)
 }
 
 extension RoomProxyProtocol {

ElementX/Sources/Services/Room/RoomSummary/RoomEventStringBuilder.swift

@@ -45,7 +45,7 @@ struct RoomEventStringBuilder {
             // Message types that don't need a prefix.
             case .emote(content: let content):
                 let senderDisplayName = sender.displayName ?? sender.id
-                return AttributedString("* \(senderDisplayName) \(content.body)")
+                return AttributedString(L10n.commonEmote(senderDisplayName, content.body))
             // Message types that should be prefixed with the sender's name.
             case .image:
                 message = L10n.commonImage