Is your feature request related to a problem? Please describe.
A common task for a bot would be to respond to a user message with a reaction to acknowledge that it is working on a task or has completed a task etc.
Describe the solution you'd like
A new API for sending a reaction:
async def on_message(self, room: MatrixRoom, message: RoomMessage) -> None:
await self._bot.api.send_reaction(message, ":+1:")
**Is your feature request related to a problem? Please describe.**
A common task for a bot would be to respond to a user message with a reaction to acknowledge that it is working on a task or has completed a task etc.
**Describe the solution you'd like**
A new API for sending a reaction:
```
async def on_message(self, room: MatrixRoom, message: RoomMessage) -> None:
await self._bot.api.send_reaction(message, ":+1:")
```