Add LogRocket integration to about.gitlab.com, except the Handbook

Merged Tyler Williams requested to merge feature/add-logrocket into master

Why is this change being made?

We are provisioning and getting started with a LogRocket tool on about.gitlab.com. This will help us better understand the buyer experience and reduce friction, hopefully improving conversions.

This MR is the first integration step - it adds LogRocket to all pages except the handbook, and should only be triggered in production, not review apps.

I also tested that session recordings are working in Safari and Safari Mobile (using an emulator on OSX), since there is some weirdness around content security policy.

This MR also adds a handbook page and some documentation about the implementation. There are a few open questions in the handbook page, such as Drift integration, Salesforce integration, Qualtrics integration, and user identification.

With the upcoming production change lock, I propose we merge this now and address the open items in further iterations.

Author Checklist

  • Provided a concise title for the MR
  • Added a description to this MR explaining the reasons for the proposed change, per say-why-not-just-what
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  • If the changes affect team members, or warrant an announcement in another way, please consider posting an update in #whats-happening-at-gitlab linking to this MR.
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Edited by Tyler Williams