Add FFI bindgings for Room.typing_notice()

bindings/matrix-sdk-ffi/src/room.rs

@@ -463,6 +463,10 @@ impl Room {
     pub fn own_user_id(&self) -> String {
         self.inner.own_user_id().to_string()
     }
+
+    pub async fn typing_notice(&self, is_typing: bool) -> Result<(), ClientError> {
+        Ok(self.inner.typing_notice(is_typing).await?)
+    }
 }
 
 #[uniffi::export(callback_interface)]