Add support to access other configs as outbound for use in routing rules

[AkramiPro]

Description suggestions

i have 2 config vmess-de and trojan-us in short i want to access trojan-us as outbound in vmess-de to use in routing rules. for example i want to route all traffic to vmess-de and only route us-domain.com to trojan-us.

in vmess-de i added this rule to Custom Config Settings:

 "route": {
        "auto_detect_interface": true,
        "rules": [
            {
                "domain_suffix": [
                    "us-domain.com"
                ],
                "outbound": "trojan-us"
            }
        ]
    }

but it is not working because trojan-us is not included in vmess-de as outbound. i think you can check all rules before run sing-box and include necessary outbounds that user use in rules.

[Mahdi-zarei]

You can do this manually using custom config, in the ( most likely distant) future I will try to add functionalities to allow creating advanced routing using the GUI, but for now it's better that you use the custom config feature.