add loading state to view model and spinner to room list vieqw

test/unit-tests/components/views/rooms/RoomListPanel/EmptyRoomList-test.tsx

@@ -20,6 +20,7 @@ describe("<EmptyRoomList />", () => {
 
     beforeEach(() => {
         vm = {
+            isLoadingRooms: false,
             rooms: [],
             primaryFilters: [],
             activateSecondaryFilter: jest.fn().mockReturnValue({}),

test/unit-tests/components/views/rooms/RoomListPanel/RoomList-test.tsx

@@ -29,6 +29,7 @@ describe("<RoomList />", () => {
         matrixClient = stubClient();
         const rooms = Array.from({ length: 10 }, (_, i) => mkRoom(matrixClient, `room${i}`));
         vm = {
+            isLoadingRooms: false,
             rooms,
             primaryFilters: [],
             activateSecondaryFilter: () => {},

test/unit-tests/components/views/rooms/RoomListPanel/RoomListPrimaryFilters-test.tsx

@@ -20,6 +20,7 @@ describe("<RoomListPrimaryFilters />", () => {
 
     beforeEach(() => {
         vm = {
+            isLoadingRooms: false,
             rooms: [],
             canCreateRoom: true,
             createRoom: jest.fn(),

test/unit-tests/components/views/rooms/RoomListPanel/RoomListView-test.tsx

@@ -24,6 +24,7 @@ jest.mock("../../../../../../src/components/viewmodels/roomlist/RoomListViewMode
 
 describe("<RoomListView />", () => {
     const defaultValue: RoomListViewState = {
+        isLoadingRooms: false,
         rooms: [],
         primaryFilters: [],
         activateSecondaryFilter: jest.fn().mockReturnValue({}),