[Twitch] Follower emotes (and maybe bits emotes?)

[Decicus]

Add /follower_emotes and /bits_emotes that practically works the same as /subscriber_emotes

Follower emotes are accessible to bots it seems (not sure how, does it just rely on the mod status?), but bits/cheeremotes likely aren't so the latter may not be as useful for display purposes (though can be handy just for listing them).

Data is accessible via the same Twitch API as /subscriber_emotes