Room details: improve members count UX (#1050)

* Inject user id into room’s details

* Refactor member fetch logic in RoomDetailsScreenViewModel

* Refactor DI

* Fetch members in RoomMembersListScreenViewModel

* Fetch members in InviteUsersScreen

* Use joinedMembersCount in room members list

* Cleanup

* Limit members refresh

* Cleanup binding

* Fix UT build errors

* Fix RoomDetailsScreenViewModelTests

* Fix RoomMembersListScreenViewModelTests

* Fix UTs

* Fix RoomDetailsScreenUITests

* Refine RoomDetailsScreenViewModelTests

* Add roomProxy extension

* PR comments

* Refactor room’s counter to Int

* Improve updateMembers() performances

* Fix memory leaks

ElementX/Sources/Mocks/RoomMemberProxyMock.swift

@@ -100,11 +100,12 @@ extension RoomMemberProxyMock {
                                         isIgnored: true))
     }
     
-    static func mockOwner(allowedStateEvents: [StateEventType]) -> RoomMemberProxyMock {
+    static func mockOwner(allowedStateEvents: [StateEventType], canInviteUsers: Bool = true) -> RoomMemberProxyMock {
         RoomMemberProxyMock(with: .init(userID: "@foo:some.org",
                                         displayName: "User owner",
                                         membership: .join,
                                         isAccountOwner: true,
+                                        canInviteUsers: canInviteUsers,
                                         canSendStateEvent: { allowedStateEvents.contains($0) }))
     }
 }