feat: add thread functionality to room features

- Enhance RoomInput to support sending messages as replies in threads by adding `threadRootId` prop.
- Update RoomTimeline to manage active thread state and handle opening threads.
- Implement ThreadView component to display thread messages and input.
- Create HomeThreadsCategory to list threads user has participated in.
- Introduce activeThreadIdAtomFamily to manage active thread state across rooms.

src/app/pages/client/home/Home.tsx

@@ -67,6 +67,7 @@ import { UseStateProvider } from '../../../components/UseStateProvider';
 import { JoinAddressPrompt } from '../../../components/join-address-prompt';
 import { ManageRoomsPrompt } from '../../../components/manage-rooms-prompt';
 import { _RoomSearchParams } from '../../paths';
+import { HomeThreadsCategory } from './HomeThreadsCategory';
 
 type HomeMenuProps = {
   requestClose: () => void;
@@ -395,6 +396,7 @@ export function Home() {
                 })}
               </div>
             </NavCategory>
+            <HomeThreadsCategory rooms={rooms} />
           </Box>
         </PageNavContent>
       )}