Draft: Start zoekt architecture FAQ

What does this MR do and why?

Starts a FAQ section for zoekt technical considerations. The scope of the first iteration is relatively small. The intention is to continually add more questions/answers as more considerations are made over time.

This adds considerations around zoekt node registration process and what should happen if a zoekt node is offline for a period of time.

Screenshots or screen recordings

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Before	After

How to set up and validate locally

Numbered steps to set up and validate the change are strongly suggested.

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.