[RRFC] Parallel script execution when value is set to an array of text.

[EvanCarroll]

Currently a script can not be set to array. Add this to your package.json,

  "scripts": {
    "foo": [
      "echo bar",
      "echo baz"
    ]
  },

Now if you try to run it,

npm run-script foo

You'll get

npm ERR! Missing script: "foo"
npm ERR! 
npm ERR! To see a list of scripts, run:
npm ERR!   npm run

npm ERR! A complete log of this run can be found in:
npm ERR!     /home/ecarroll/.npm/_logs/2022-07-02T19_32_38_351Z-debug-0.log

The obvious intent here is to run two scripts where neither one is concerned with the status of another. This RFC would define the behavior of script with a member set to an array to,

1. Run both scripts without regard for return codes of other scripts defined,
2. Run both scripts in parallel.

[ljharb]

seems related to #190