import { processPipe } from "https://deno.land/x/dnit@dnit-v1.13.0/utils.ts";
Run a chain of processes - first and last processes can take or receive either string, inherited or null stdin/stdout.
Parameters
params: { in: Inp; out: Outp; stderrs?: "null" | "inherit"; inp: ProcessIoVal<Inp>; cmds: [ExecParams, ...ExecParams[]]; }