Allowing Local IP Overriding Through Socks Proxy for Server Connections

**Feature Request:**

We appreciate your great work on FRP. The current setup is fantastic.

**Background:**

In the previous configuration file, we've had the following settings:

```toml
serverAddr = "http://xxx.com/"
domain = "xxx.com"
serverPort = 7000
[
mongodb]
uri = "mongodb://${username}:${password}@${serverIp}:${serverPort}/"
```

However, this presents a problem when trying to access `http://xxx.com/` from a local machine with a Socks5 proxy set up.

**Current Workaround:**

I've attempted to use Proxifier to bypass this issue, but unfortunately, it does not work as expected.

**Request:**

Is it possible to allow the system to automatically override the local IP address for the server connection using the Socks5 proxy at `127.0.0.1:1080`? This would enable us to access `http://xxx.com/` directly from the local machine without needing to configure any additional proxy setup.

**Severity:**

This issue affects Client Plugin.