Checkbox prompt representation.

Simple prompt:

import { Checkbox } from "./mod.ts";

const colors: Array<string> = await Checkbox.prompt({
  message: "Pick some colors",
  options: ["red", "green", "blue"],
});

Mixed option types:

import { Checkbox } from "./mod.ts";

const values: Array<string | number> = await Checkbox.prompt<string | number>({
  message: "Pick some colors",
  options: [1, 2, "3", "4"],
});

None primitive option types:

import { Checkbox } from "./mod.ts";

const dates: Array<Date> = await Checkbox.prompt({
  message: "Pick some dates",
  options: [
    {
      name: "Date 1",
      value: new Date(100000),
    },
    {
      name: "Date 2",
      value: new Date(200000),
    },
    {
      name: "Date 3",
      value: new Date(300000),
    },
  ],
});

Grouped options:

import { Checkbox } from "./mod.ts";

const values = await Checkbox.prompt({
  message: "Select some values",
  options: [{
    name: "Group 1",
    options: ["foo", "bar", "baz"],
  }, {
    name: "Group 2",
    options: ["beep", "boop"],
  }],
});