Request: Add docs navigation panel to /guides

[Drew-P-drawers]

Goal

Create a path with minimum resistance to get site visitors back to /docs or /guides more easily.
There's not an not an easy path to follow through articles and guides.

Reasoning

With an influx in content through /guides we have just as many engaged sessions on the site as a whole, but the journey has shifted. When we had more traffic in docs, we had more people hitting the /deploy pages. Now that traffic is increasing in /guides, we have less people hitting the /deploy page because they don't see the big picture of /docs anymore.

Changes

Figma: https://www.figma.com/design/3he8e72251IEnF6dBafKq1/%F0%9F%9A%A7-fleetdm.com-(scratchpad)?node-id=16298-5693

[mike-j-thomas]

Thanks, @Drew-P-drawers; I've already been drafting something similar to solve this. Thanks for sending the digging up the data that backs up my hunch.

[mike-j-thomas]

To start with, we were planning to add breadcrumbs and search to the guide template (#15857). That will at least help users navigate, especially if they have arrived via a shared article or Google search. Also considering putting a CTA for the docs and deploying on the guides template rather than just adding the docs sidenav.

[mike-j-thomas]

@Drew-P-drawers, has the merging of #15857 (breadcrumbs) and #21850 (search) helped any with this?

I have a wireframe drafted (linked in the description) that I think is a good UX improvement. What I'm missing is certainty that now is the right time to add this to Eric's plate.

We can at least get an idea of an estimate from @eashaw based on the proposed changes before bringing it to design review.

[mike-j-thomas]

cc @Sampfluger88 ⬆️ (forgot to tag you above)

[nonpunctual]

related: #16713

[mike-j-thomas]

@eashaw, this has been through design review and is ready for you 👍
Please also include #21281 as part of this.

[fleet-release]

Navigation panel shines,
Guides and docs intertwined,
Clear path, users find.