Add /image/avif endpoint

[vanillajonathan]

Description

Add a endpoint for serving AVIF images at /image/avif

Acceptance Criteria

The endpoint at /image/avif returns a AVIF image.

[kics223w1]

Will add it tonight 👍🏻

[kics223w1]

It's done, please try http://localhost:8080/image/avif

[trtanhai]

its still not working bro