add support for Mixcloud

[mmattbtw]

service name

Mixcloud

service description

Mixcloud is an online audio sharing service directed towards DJs and DJ Mixes.

link samples

https://www.mixcloud.com/dublab/swami-sound-two-step-verification-012223/
(i've tried clicking on all the share buttons on all devices and its giving the same link so..)

additional context

No response

[KwiatekMiki]

https://github.com/imputnet/cobalt/issues/257

[wukko]

@KwiatekMiki this issue has sample links unlike the other one though