Add typing notifications
This adds typing notifications, this works in both ways, sending and receiving.
I formulated the messages similar to the ones of element.
Part of #743 (closed), I have taken #617 (closed) into account.
This adds typing notifications, this works in both ways, sending and receiving.
I formulated the messages similar to the ones of element.
Part of #743 (closed), I have taken #617 (closed) into account.