DM Details View (#744)

* Basic implementation completed but it requires some bug fixing and polishing (+4 squashed commits)
Squashed commits:
[43f0064e] now the content of the room details reflects the expected dm details content when the conditions are met
[fe6f2b5e] replaced existing headers with a composable and reusable HeaderView
[3c00120a] now the members are fetched every time the room is opened
[421d539b] refactored the members fetching to be immediate in case the room could be a direct chat

* polished the code and fixed some bugs that prevented the updated state of the members to be displayed in the room details view (+1 squashed commit)
Squashed commits:
[6bf98473] fix for the button not being destructive in room details screen

* removed copy button and updated copy

* moved a file and renamed header view

* addressed all PR comments

* sdk bump

* UI tests

* unit tests

* changelog

* updated mocks

* removed a duplicated signature in a mock

ElementX/Sources/Services/Room/RoomProxyProtocol.swift

@@ -54,7 +54,9 @@ protocol RoomProxyProtocol {
     var topic: String? { get }
     
     var avatarURL: URL? { get }
-        
+
+    var membersPublisher: AnyPublisher<[RoomMemberProxyProtocol], Never> { get }
+
     func loadAvatarURLForUserId(_ userId: String) async -> Result<URL?, RoomProxyError>
     
     func loadDisplayNameForUserId(_ userId: String) async -> Result<String?, RoomProxyError>
@@ -79,13 +81,13 @@ protocol RoomProxyProtocol {
     
     func reportContent(_ eventID: String, reason: String?) async -> Result<Void, RoomProxyError>
     
-    func members() async -> Result<[RoomMemberProxyProtocol], RoomProxyError>
-
     func ignoreUser(_ userID: String) async -> Result<Void, RoomProxyError>
     
     func retryDecryption(for sessionID: String) async
 
     func leaveRoom() async -> Result<Void, RoomProxyError>
+    
+    func updateMembers() async
 }
 
 extension RoomProxyProtocol {