[Formatting] add format-scripts

[psimk]

@pota/format-scripts

Commands

• format - runs a code formatter, with auto-fixing
• format:check - runs a formatter, that reports back any formatting issues

Description

We have already been using a setup similar to this in most of our templates, for example the @pota/muban-template:

package.json

"scripts": {
  "format": "prettier \"**/*.{js,jsx,ts,tsx,scss,md,json}\" --write --loglevel warn",
},

The commands can be implemented using prettier.

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See #39 for context