Gather controller configurations
We recently changed the format of es_input.cfg
(to reflect changes in ConfigGen).
Due to this change, we lost support for many controllers, which we need to get our hands on to get proper configuration values.
Similarly to what was proposed in #730 (moved), it would be nice to setup a contribution channel where the community could provide configuration for their pads.
Keeping this channel permanently opened and promoted could also allow us to add support for newly released controllers without having to buy them all