Run tasks without shell

[gim913]

Ok, so I'm not sure if this is a good idea, but I've made quick hack to be able to run tasks without a shell.

I did this only on windows, by abusing a bit utilizing WindowsShellType, but probably sane of doing this would be adding one more variant inside Shell enum (and handling it on all OSes).

Anyway, here's the hack: main...gim913:zed:task-windows-none-shell-hack

And sample how I'm running cargo without shell:

[
  {
    "label": "Cargo run",
    "command": "cargo",
    "args": ["+nightly", "run", "--", "foo", "bar"],

    "reveal": "always",
    // What to do with the terminal pane and tab, after the command had finished:
    // * `never` — Do nothing when the command finishes (default)
    // * `always` — always hide the terminal tab, hide the pane also if it was the last tab in it
    // * `on_success` — hide the terminal tab on task success only, otherwise behaves similar to `always`
    "hide": "on_success",

    "shell": {
      "program": "none"
    },
  }
]