Include sorting imports with formatting

[carlgieringer]

E.g. with a prettier plugin:

• https://github.com/trivago/prettier-plugin-sort-imports
• https://github.com/simonhaenisch/prettier-plugin-organize-imports

Or as another check:everything step using this tool:

• https://www.npmjs.com/package/organize-imports-cli

[carlgieringer]

We can triggers VSCode's 'sort imports' on save: https://stackoverflow.com/a/54690944/39396

It won't introduce our pattern of grouping the imports by third-party, other package, and local, but it will respect that grouping (separated by a linebreak) if it already exists.