Research conversation best practices

[eden881]

Currently, the bot implements the /filter command directly, and manually trims the playlist ID that comes after the command.
There should be a better way to handle this. Most bots implement a flow that resembles a conversation - you start with a command, then "talk" with the bot (i.e. send the playlist ID), then finally get the result you want.

We need to figure out how to implement such a flow and replace our current makeshift approach.