Improve Page sorting in the Sidebar

[Jowan-Spooner]

Not sure how this is best implemented, but I feel the sorting is really arbitrary right now. We might want to have sections for step by step guides (like Getting Started) and info pages.

[coppolaemilio]

Yes! the current sidebar is random actually.
What sections should we have?

[Jowan-Spooner]

It's a bit tricky as (right now) we have a couple of pages which don't perfectly fit one of these sections.
But looking at the godot docs I'd say the ones we could need would be:

• About
• Guides/Tutorials
• Manual/Documentation/Information
• FAQ
• If we manage to automate it: Class Reference (especially for autogenerated reference of Subsystems & Events)

[CakeVR]

Using mdBook, the SUMMARY.md file contains the actual navigation sidebar and decides how the links are displayed. Check out the current live website for a demonstration and take a look at the repository file.