Mimic chat bot interaction for raid creation

[nicolasblaye]

When a user gives an ambiguous name for a gym, we answer with all the possibilities. Maybe we can implement these possibilities as clickable button, that would create the corresponding raid?

1. Make buttons for all arena + one for none of the above
   2a. Pressing a button will send a !raid message with the correct information
   2b. Pressing a button will remove the message

[tama]

Extending on this idea :
After receiving a !raid command, send a message alerting of the creation of the raid boss at gym gym and add a short timeout (~5 seconds) during which the user can cancel the command (by sending "cancel" or add a reaction to the message) ; without any interaction the raid channel is created.
Then delete the message written by the bot (now useless) and as of now add a green checkmark to notify that the raid channel creation was successful