[EUI+] [Spike] New docs versioning

[tkajtoch]

Summary

We need to research the best way to add docs versioning to the new documentation site based on docusaurus. The new website will host documentation for multiple libraries versioned independently and general documentation that should always be up-to-date no matter what library version is selected.

Acceptance Criteria

• There should be a document written documenting how the new versioning should be implemented and how we should store the older versions alongside the latest one
• The document should include performance details for the chosen solution