Add a new RoomThreadListScreen and hook it up to the RoomThreadListService

It will automatically paginate to fill the screen and update the list as updates come in.

ElementX/Sources/Screens/RoomThreadListScreen/RoomThreadListScreenViewModelProtocol.swift

@@ -0,0 +1,14 @@
+//
+// Copyright 2025 Element Creations Ltd.
+//
+// SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial.
+// Please see LICENSE files in the repository root for full details.
+//
+
+import Combine
+
+@MainActor
+protocol RoomThreadListScreenViewModelProtocol {
+    var actionsPublisher: AnyPublisher<RoomThreadListScreenViewModelAction, Never> { get }
+    var context: RoomThreadListScreenViewModelType.Context { get }
+}