Add default image to CDN, favicon to registration, create logo

cdn/src/main.rs

@@ -29,6 +29,7 @@ async fn main() -> std::io::Result<()> {
             .service(robocraft::brawl_data::get)
             .service(robocraft::campaign_data::get)
             .service(robocraft::factory::arc::get)
+            .service(robocraft::favicon::get)
     })
     .bind((cli_args.ip, cli_args.port))?
     .run()