Potential fix for discord Direct media access

[FarisZR]

Hey, first thanks for the awesome projects!

I have just implemented a fix for direct media access, it uses Discord_CDN a small JS project, which uses a user token to extract signed links.

Some details here:
aosus/infrastructure-meta#5
aosus/cups-1#53

I originally wanted to submit a PR to add documentation on how to do this, but realistically this program is basic to the point it can be included in the bridge easily.