Method insert

src/state.rs:19–24

(&self, room: &String, message: Message)

impl MessageStore {
    pub async fn insert(&self, room: &String, message: Message) {
        let mut binding = self.messages.write().await;
        let messages = binding.entry(room.clone()).or_default();
        messages.push_front(message);
        messages.truncate(20);
    }

    pub async fn get(&self, room: &String) -> Vec<Message> {
        let messages = self.messages.read().await.get(room).cloned();