Reuse TAURI_DEV_HOST from Rust for local backend API

[setoelkahfi]

I'm debugging a locally running backend service on my laptop and have the debugging feature to switch back and forth from the production environment to the local environment. But obviously, I need to hit my local IP address when developing on a real device, just like the TAURI_DEV_HOST from Tauri. I could just copy and paste the IP, but I'm wondering if there's a programmatic way to reuse what Tauri already has.