import { CollectOption } from "https://deno.land/x/sane_fmt@0.13.0/x/args.ts";
Declare an option that collects value after flags
CLI example: --opt foo --opt bar --opt baz
→ ["foo", "bar", "baz"]
type
<Name extends string, Value>(name: Name, descriptor: CollectOptionDescriptor<Value>) => FlagType<Name, Value[]>