refs https://github.com/TryGhost/Ghost/issues/9623
- move click handler registration from `onEnterEdit` to `onSelect`
- add guard against deselecting for clicks on the editor canvas
- prevents card being deselected when the click would have placed the cursor in a position that selected the card
- requires editor instance to be passed through to `{{koenig-card}}` in all card components
refs https://github.com/TryGhost/Ghost/issues/9623
- register window click handler in `{{koenig-card}}` whilst card is in edit mode
- deselect card when a click is registered
- ignore any clicks inside the card
- ignore any clicks that originate inside of a modal
- pass our `deselectCard` action through to all cards
refs https://github.com/TryGhost/Ghost/issues/9623
- `code` card that uses CodeMirror for the edit view and outputs `<pre><code>...</code></pre>` for the rendered view
- adds triple-backtick text expansion for creating code cards