♻️ Replace flume with tokio and share Matrix client infos to chats

- Remove of the flume dependency.
- Add the capability to share data provided by the Matrix client to the ChatsWindow. Indeed, until the 0.6 Dioxus
  release, each window runs in a separate virtual DOM so the context and Fermi states are completely seperate
  (cf. https://discord.com/channels/899851952891002890/1188206938215948378).

src/matrix_interface/requester.rs

@@ -1,18 +1,34 @@
+use std::cell::RefCell;
 use std::sync::Arc;
 
 use matrix_sdk::Client as MatrixClient;
+use tokio::sync::broadcast::Receiver;
 use tokio::sync::mpsc::UnboundedSender;
 
 use super::client::RoomTopicEvent;
 use super::worker_tasks::{oneshot, LoginStyle, WorkerTask};
 use crate::base::Room;
 
+#[derive(Debug)]
+pub struct Receivers {
+    pub rooms_receiver: RefCell<Receiver<Room>>,
+    pub room_topic_receiver: RefCell<Receiver<RoomTopicEvent>>,
+}
+
+impl Clone for Receivers {
+    fn clone(&self) -> Self {
+        Self {
+            rooms_receiver: RefCell::new(self.rooms_receiver.borrow().resubscribe()),
+            room_topic_receiver: RefCell::new(self.room_topic_receiver.borrow().resubscribe()),
+        }
+    }
+}
+
 #[derive(Debug)]
 pub struct Requester {
     pub matrix_client: Arc<MatrixClient>,
     pub tx: UnboundedSender<WorkerTask>,
-    pub rooms_receiver: flume::Receiver<Room>,
-    pub room_topic_receiver: flume::Receiver<RoomTopicEvent>,
+    pub receivers: Receivers,
 }
 
 impl Requester {