Knocked Preview implementation (#3426)

* JoinRoomScreen ui for knocking

* code improvement

* updated previews

* added knocked state with tests

* send knock request

* Apply suggestions from code review

Co-authored-by: Doug <6060466+pixlwave@users.noreply.github.com>

* pr comments

* update tests

* new API

* knock implementation and cancel knock

* update strings

* added a knocked cell in the home screen

* design update

* updated SDK

* simplified the invite case code

* pr comments

* updated previews

* added message as reason

* updated strings

* fixing tests

---------

Co-authored-by: Doug <6060466+pixlwave@users.noreply.github.com>

ElementX/Sources/Services/Room/KnockedRoomProxy.swift

@@ -76,7 +76,11 @@ class KnockedRoomProxy: KnockedRoomProxyProtocol {
     }
     
     func cancelKnock() async -> Result<Void, RoomProxyError> {
-        // TODO: Implement this once the API is available
-        .failure(.invalidURL)
+        do {
+            return try await .success(room.leave())
+        } catch {
+            MXLog.error("Failed cancelling the knock with error: \(error)")
+            return .failure(.sdkError(error))
+        }
     }
 }