[Suggestion] Support Direct Outbouand Type

[amir1376]

Description suggestions

add a way to add and use the direct outboand type without the need of creating custom SingBox config.

Necessity of recommendations

it could be useful for multiple cases
for example we want to share and expose the internet of the current PC to the network (via socks proxy). so other people that are connected to this PC can connect to the internet. for example you may heard about an android app called Every Proxy which is created for exactly the same purpose

I saw this feature in Husi. and was thinking that we can also benefit from this on PC as well