Add certificates to host vitals for macOS, iOS, iPadOS

[noahtalerman]

Goal

User story
As an IT admin,
I want to see a list of certificates on a host.

Objective

Mission critical MDM replacement

Original requests

• List certificates on macOS, iOS, iPadOS hosts #22802

Context

• Product designer: @rachaelshaw

Changes

Product

• UI changes: Figma
• CLI (fleetctl) usage changes: No changes
• YAML changes: No changes
• REST API changes: TODO
• Fleet's agent (fleetd) changes: No changes
• Activity changes: No changes
• Permissions changes: TODO
• Changes to paid features or tiers: TODO
• Other reference documentation changes: No changes
• Once shipped, requester has been notified

Engineering

• Feature guide changes: TODO
• Database schema migrations: TODO
• Load testing: TODO

ℹ️  Please read this issue carefully and understand it. Pay special attention to UI wireframes, especially "dev notes".

QA

Risk assessment

• Requires load testing: TODO
• Risk level: Low / High TODO
• Risk description: TODO

Manual testing steps

1. Step 1
2. Step 2
3. Step 3

Testing notes

Confirmation

1. Engineer (@____): Added comment to user story confirming successful completion of QA.
2. QA (@____): Added comment to user story confirming successful completion of QA.