Implement Knock Logic (#3573)

* WIP RequestToJoin struct

* implemented the logic to display the cells

* knock request banner accept flow

* mark all knocks as seen implemented

* details logic

* implemented accept, decline and ban in the list

* added a loader and modified the stacked view

of the banner

* pr suggestions

* updated naming and loading strings

* added the initial loading state

improved code and the tests

* updated a string that has changed

* code improvement

* tests for the room screen view model

* room details tests

and improved the knock requests tests for the room screen

* knock requests list tests

* added error state alerts with retry

* struct has been renamed on the sdk

so I renamed it also on the app side

* update SDK

ElementX/Sources/Mocks/JoinedRoomProxyMock.swift

@@ -30,6 +30,7 @@ struct JoinedRoomProxyMockConfiguration {
     var timelineStartReached = false
     
     var members: [RoomMemberProxyMock] = .allMembers
+    var knockRequestsState: KnockRequestsState = .loaded([])
     var ownUserID = RoomMemberProxyMock.mockMe.userID
     var inviter: RoomMemberProxyProtocol?
     
@@ -57,6 +58,7 @@ extension JoinedRoomProxyMock {
         
         infoPublisher = CurrentValueSubject(.init(roomInfo: .init(configuration))).asCurrentValuePublisher()
         membersPublisher = CurrentValueSubject(configuration.members).asCurrentValuePublisher()
+        knockRequestsStatePublisher = CurrentValueSubject(configuration.knockRequestsState).asCurrentValuePublisher()
         typingMembersPublisher = CurrentValueSubject([]).asCurrentValuePublisher()
         identityStatusChangesPublisher = CurrentValueSubject([]).asCurrentValuePublisher()