Add capraaudio headphones

[Meganium97]

Headphone requests
Headphone requests are not welcome. If the headphones have not been measured by one of the supported sources, AutoEq cannot support it. If you happen to find a frequency response graph for the headphones, you can create eq settings yourself by following this guide. Open a headphone request issue only if the headphones have been measured by one of the supported sources but have not been added to AutoEq.

Capra Audio has generously provided eq graphs for their headphones, as well as a variety of others.
https://squig.capraaudio.com/