Allow channel customization through 1x1 image in description exploit

In source mode for editing a channel description, someone can copy and paste this at the end:

<img alt="anything goes here" src="https://upload.wikimedia.org/wikipedia/commons/c/ca/1x1.png" />

Better Mixer could be able to read the alt tag, thus allowing streamers (and channel editors?) to add custom channel settings without needing to host anything on my end or have any visible impact to the end-user (the 1x1 pixel image is not visible in the description).

A user-friendly channel settings editor could be easily created by creating a simple static page on my GitHub Pages site which would let people configure their channel and then spit out the image string (with instructions on how to properly add it to your description).

This could also be used to replace twitchsync.json and the sync form, though it would need to be kept in the repo for backwards compatibility, at least for a while.

Other channel features which this feature could allow include:

Permitting Twitch/FFZ/BTTV global emotes
Allowing Mixer subs to use Twitch subscriber emotes
Allowing streamers to designate "VIPs" (though I wouldn't be surprised if this feature came to Mixer natively)
And more!

TheUnlocked / Better-Mixer

Allow channel customization through 1x1 image in description exploit #35