[Feature]: Add support sub process

if i selected cmd.exe to proxy! then if i runned chrome.exe via cmd command: "start /wait chrome.exe"
so chrome .exe will be sub process of cmd.exe and should route via proxy

sorry for my english if is bad

The issue describes a feature to proxy subprocesses when a parent process like cmd.exe is proxied. Start by examining the process interception and network routing logic in the C# codebase. Look for how processes are currently tracked and how network traffic is redirected. Determine what changes are needed to handle child processes and test with a simple spawned process like chrome.exe.

Written by the indexing model from the issue text.