Utils updates

[cycle4passion]

updated utils to make use of :example{}

simplified code in each of Utils components
added foreign currency example in fmt

[changeset-bot]

⚠️ No Changeset found

Latest commit: 105e9f7

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

This PR includes no changesets

When changesets are added to this PR, you'll see the packages that this PR includes changesets for and the associated semver types

Click here to learn what changesets are, and how to add one.

Click here if you're a maintainer who wants to add a changeset to this PR

[pkg-pr-new]

Open in StackBlitz

npm i https://pkg.pr.new/layerchart@770

commit: 1ae43fb

[github-actions]

built with Refined Cloudflare Pages Action

⚡ Cloudflare Pages Deployment

Name	Status	Preview	Last Commit
layerchart	✅ Ready (View Log)	Visit Preview	105e9f7

[techniq]

Much cleaner! Would using inline:

```svelte live
<script>
  ...
</script>

be even cleaner?

Would remove the need for separate examples... but then you also loose the ability to open the examples standalone / in StackBlitz / etc.

Just a thought. I'm good either way, but thought it was worth mentioning.