refs https://github.com/TryGhost/Ghost/issues/9505
- disable `mobiledoc-kit`'s built-in link tooltip
- add `{{koenig-link-toolbar}}` component
- shows toolbar above a link when it is hovered with the mouse
- hides toolbar when a link isn't hovered
- has a clickable link with the URL, opens in a new tab
- edit button switches display to the link input toolbar
- delete button removes link markup from the link
refs https://github.com/TryGhost/Ghost/issues/9505
- switch `{{koenig-toolbar}}` to use Spirit classes and icons
- wrap the toolbar `<ul>` in an absolutely positioned `<div>` rather than positioning the toolbar directly to improve animation behaviour
- remove old/unused Koenig SVG icons
no issue
- copy Spirit styles over (eventually these will live in an addon)
- update `ember-cli-build` to output a separate CSS file for Spirit
- update `asset-delivery` addon to output Spirit CSS link
- add `{{kg-style}}` helper for Spirit class names
- update `{{koenig-card}}` and the `{{koenig-card-markdown/html}}` components to use Spirit class names and markup
- replace markdown icon with new version from Spirit
refs https://github.com/TryGhost/Ghost/issues/9311
- use the `{{inline-svg}}` helper instead of having SVGs inlined manually in the component template
- rename the koenig icons directory
- add the koenig icons directory to the list of locations used by `{{inline-svg}}`
