Add Search History for ZoLa

[dhochbaum-dcp]

This, along with #1199, completes #1191

[TylerMatteo]

@dhochbaum-dcp In the interest of maintaining this code as reusable components not coupled to any particular app, I'd really like to avoid having a Zola-specific component. Is there anything about how Zola uses the component that would cause the new functionality to break in other apps? And even if that is the case, we can make these changes to the existing labs-search component, release a new version of the addon to npm, and only update Zola to that version.

[dhochbaum-dcp]

@dhochbaum-dcp In the interest of maintaining this code as reusable components not coupled to any particular app, I'd really like to avoid having a Zola-specific component. Is there anything about how Zola uses the component that would cause the new functionality to break in other apps? And even if that is the case, we can make these changes to the existing labs-search component, release a new version of the addon to npm, and only update Zola to that version.

I don't think there's inherently anything that would break in other apps, but I don't know which of our other apps it's used in, and whether we'd want to have Search History automatically enabled in them. It's also open source, so who knows who else is using it...what I'm going to do is close this PR, and open a new PR which makes the changes to the existing labs-search component, with Search History functionality turned off by default. Then I'll open a new PR for ZoLa which uses the labs-search component with @useSearchHistory={{true}} added.