* Remove Proxy link and add ExternalSource to instance detail page header
* Create HealthChecks tab with route and styling
* Fix up tests to fit redesign of Service Instances Detail page
We've had a set of %placeholders in our base styles for quite a while
but not butten the bullet to use them. This begins to use them.
We had to make a small amount of tweaks to base whilst doing this, but
its as we'd prefer there to be as few font placeholders as possible. We
might/should be able to reduce these further at somepoint, or
potentially rename them. We currently have six header fonts (or 4 header
fonts/2 strong body fonts) and 3 body fonts.
We also noticed an empty CSS file and deleted that while we were here.
We also noticed that the bottom border of structure tabs was a pixel
larger than ours so we tweaked that here also.
Migrate roughly half of the base components into base
Adds a target for easily formatting CSS
Further CSS amends/migration (#5921)
1. tooltips within tables where a slightly bit troublesome due to a mix
of `inline-flex`, `overflow` and the need for truncation. This refineds
tooltips a slight bit more to work 'everywhere'.
2. We also move tooltip to use the correct color and min-width from
structure, but we overwrite the min-width here until we get confirmation
on widths/alignment of text within a tooltip.
3. Tiny fixes for breadcrumbs and toggle-buttons in tabular listings
4. Now we inline-flex our table cells, it means it is impossible to
truncate text without wrapping it in another element. This wraps all
Description like text in `<p>` tags. Generally the first column of text
is already wrapped in an `<a>` tag. Other items such as consul tags and
policy names etc get 'cutoff' rather than truncated.
5. We are now using all the icons from `@hashicorp/structure-icons`
