Add SpaceRoomCell & Space…ProxyProtocols and use them on the SpaceListScreen. (#4404)

ElementX/Sources/Services/Spaces/SpaceRoomListProxyProtocol.swift

@@ -0,0 +1,25 @@
+//
+// Copyright 2025 New Vector 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
+import MatrixRustSDK
+
+// Temporary until the SDK is updated.
+enum SpaceRoomListProxyPaginationState {
+    case idle(endReached: Bool)
+    case loading
+}
+
+// sourcery: AutoMockable
+protocol SpaceRoomListProxyProtocol {
+    var spaceRoom: SpaceRoomProxyProtocol { get }
+    
+    var spaceRoomsPublisher: CurrentValuePublisher<[SpaceRoomProxyProtocol], Never> { get }
+    var paginationStatePublisher: CurrentValuePublisher<SpaceRoomListProxyPaginationState, Never> { get }
+    
+    func paginate() async
+}