…ok (#5944)

## Description

Previously the Sway book did not have any sections on Sway-Libs,
Sway-Standards, or Sway-Applications and was sparsely mentioned.
Sections for each repository have been added with a brief overview of
what they contain. Links to any app, standard, or library have also been
provided.

Any use of the sway-libs repository has been replaced with the
[Sway-Libs book](https://fuellabs.github.io/sway-libs/book/index.html).
This should eventually be replaced with a doc hub link when it has been
integrated and the same for Sway-Apps and Sway-Libs.

Closes #5780 

## Checklist

- [x] I have linked to any relevant issues.
- [ ] I have commented my code, particularly in hard-to-understand
areas.
- [x] I have updated the documentation where relevant (API docs, the
reference, and the Sway book).
- [x] If my change requires substantial documentation changes, I have
[requested support from the DevRel
team](https://github.com/FuelLabs/devrel-requests/issues/new/choose)
- [x] I have added tests that prove my fix is effective or that my
feature works.
- [x] I have added (or requested a maintainer to add) the necessary
`Breaking*` or `New Feature` labels where relevant.
- [x] I have done my best to ensure that my PR adheres to [the Fuel Labs
Code Review
Standards](https://github.com/FuelLabs/rfcs/blob/master/text/code-standards/external-contributors.md).
- [x] I have requested a review from the relevant team or maintainers.

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Co-authored-by: K1-R1 <[email protected]>