Proof of Concept: process replacement

[zkat]

So it dawned on me that doing things from Rust means we have access to the execve(2) syscall, which replaces the current process with another process.

The idea with this spike is to prove out that a dstopic node ... command is possible where the node "child" process takes on the same pid and assumes it was invoked directly by the user.

[zkat]

Looks like this can't be done cross-platform, so we'll just spawn it as a child process and whatever.