Refactor CE Documentation Homepage
What does this MR do?
A proof of concept of an MVC for making the documentation easier to consume.
Relates to: https://gitlab.com/gitlab-org/gitlab-ce/issues/52304.
- Apply the correct labels and milestone
- Crosslink the document from the higher-level index
- Crosslink the document from other subject-related docs
- Correctly apply the product badges and tiers
Port the MR to EE (or backport from CE): always recommended, required when the
- Your team's review (required)
- PM's review (recommended, but not a blocker)
- Technical writer's review (required)
- Merge the EE-MR first, CE-MR afterwards