WIP: [IndexTable Cell] Add optional type prop for right-aligned and monospaced currency formatting

[rcaplanshopify]

WHY are these changes introduced?

Fixes #407753

The addition of the type prop to the IndexTable's Cell component allows for right-aligned, monospaced text.

While an optional boolean prop like currency would have worked, the type prop opens up the possibility for future type values that can be supported by updating the union type and adding additional string values representing different scenarios with varying stylistic needs.

Screen.Recording.2023-02-22.at.1.45.47.PM.mp4

WHAT is this pull request doing?

This PR allows users to easily render the cell contents aligned to the right and monospaced. This makes it easier to read columns with currency values, as the numbers of each place in the value will be consistently sized, improving the experience of vertical scanning.

The PR takes advantage of the font-variant-numeric CSS property, implementing the tabular-nums value (forcing consistent widths on OpenType fonts) and the lining-nums value (rendering numbers with a consistent height and on the same plane).

How to 🎩

🖥 Local development instructions
🗒 General tophatting guidelines
📄 Changelog guidelines

Copy-paste this code in playground/Playground.tsx:

import React from 'react';
import {Page} from '../src';

export function Playground() {
  return (
    <Page title="Playground">
      {/* Add the code you want to test in here */}
    </Page>
  );
}

🎩 checklist

• Tested on mobile
• Tested on multiple browsers
• Tested for accessibility
• Updated the component's README.md with documentation changes
• Tophatted documentation changes in the style guide

[github-actions]

size-limit report 📦

Path	Size
polaris-react-cjs	220.2 KB (+0.02% 🔺)
polaris-react-esm	139.9 KB (+0.04% 🔺)
polaris-react-esnext	195.72 KB (+0.06% 🔺)
polaris-react-css	42.35 KB (+0.12% 🔺)

[rcaplanshopify]

Closing in favor of the solution introduced in PRs:

• Add numeric property to Text, right align numeric IndexTable cells and titles and add best practice documentation for numeric values in tables #8448
• https://github.com/Shopify/web/pull/84377