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>

UnitTests/Sources/JoinRoomScreenViewModelTests.swift

@@ -56,6 +56,23 @@ class JoinRoomScreenViewModelTests: XCTestCase {
         }.fulfill()
     }
     
+    func testCancelKnock() async throws {
+        setupViewModel(knocked: true)
+        
+        try await deferFulfillment(viewModel.context.$viewState) { state in
+            state.mode == .knocked
+        }.fulfill()
+        
+        context.send(viewAction: .cancelKnock)
+        XCTAssertEqual(viewModel.context.alertInfo?.id, .cancelKnock)
+        
+        let deferred = deferFulfillment(viewModel.actionsPublisher) { action in
+            action == .dismiss
+        }
+        context.alertInfo?.secondaryButton?.action?()
+        try await deferred.fulfill()
+    }
+    
     private func setupViewModel(throwing: Bool = false, knocked: Bool = false) {
         let clientProxy = ClientProxyMock(.init())
         
@@ -75,7 +92,10 @@ class JoinRoomScreenViewModelTests: XCTestCase {
         
         if knocked {
             clientProxy.roomForIdentifierClosure = { _ in
-                .knocked(KnockedRoomProxyMock(.init()))
+                let roomProxy = KnockedRoomProxyMock(.init())
+                // to test the cancel knock function
+                roomProxy.cancelKnockUnderlyingReturnValue = .success(())
+                return .knocked(roomProxy)
             }
         }