Add youtarr Nix module and register in default.nix

hosts/h001/mods/litellm.nix

@@ -172,6 +172,8 @@ in
               api_base = "http://100.64.0.8:9010/air_prd";
               api_key = "na";
               drop_params = true;
+              # TODO try this instead of sanitized name
+              # additional_drop_params = if [ "messages[*].cacheControl" ];
             };
           })
           # curl -L t.net.joshuabell.xyz:9010/air_prd/models | jq '.data.[].id'