fix(ui): allow thetvdb images for unmatched series (#1105)

When a series has no equivalent in TheTVDB used by Sonarr, a popup is displayed to select the series
on TheTVDB. The images in this popup come from artworks.thetvdb.com, which was not an authorized
domain for Next.js images.

fix #1075

next.config.js

@@ -10,6 +10,7 @@ module.exports = {
     remotePatterns: [
       { hostname: 'gravatar.com' },
       { hostname: 'image.tmdb.org' },
+      { hostname: 'artworks.thetvdb.com' },
     ],
   },
   webpack(config) {