docs: Merge sway reference section into the sway book

[laishawadhwa]

Description

Checklist

• I have linked to any relevant issues.
• I have commented my code, particularly in hard-to-understand areas.
• I have updated the documentation where relevant (API docs, the reference, and the Sway book).
  • If my change requires substantial documentation changes, I have requested support from the DevRel team
• I have added tests that prove my fix is effective or that my feature works.
• I have added (or requested a maintainer to add) the necessary Breaking* or New Feature labels where relevant.
• I have done my best to ensure that my PR adheres to the Fuel Labs Code Review Standards.
• I have requested a review from the relevant team or maintainers.

[IGI-111]

We should think about deleting the reference once the merge is fully done.

[laishawadhwa]

We should think about deleting the reference once the merge is fully done.

Agreed @IGI-111 : Will add more sections from the reference section within the book before deleting the section

[sdankel]

@laishawadhwa You'll need to add Namespaces to docs/book/spell-check-custom-words.txt to fix the spellcheck CI, as well as fix these lint errors:

docs/book/src/reference/known_issues_and_workarounds.md:11 MD012/no-multiple-blanks Multiple consecutive blank lines [Expected: 1; Actual: 2]
docs/book/src/reference/known_issues_and_workarounds.md:20:1 MD004/ul-style Unordered list style [Expected: asterisk; Actual: dash]
docs/book/src/reference/known_issues_and_workarounds.md:21:1 MD004/ul-style Unordered list style [Expected: asterisk; Actual: dash]
docs/book/src/reference/known_issues_and_workarounds.md:22:1 MD004/ul-style Unordered list style [Expected: asterisk; Actual: dash]
docs/book/src/reference/known_issues_and_workarounds.md:23:1 MD004/ul-style Unordered list style [Expected: asterisk; Actual: dash]
docs/book/src/reference/known_issues_and_workarounds.md:39 MD012/no-multiple-blanks Multiple consecutive blank lines [Expected: 1; Actual: 2]

[sdankel]

I think this error means you can't have these links nested here:

AssertionError [ERR_ASSERTION]: cannot nest subfolders in SUMMARY.md

Suggested change

	- [Initialization](./reference/storage/init.md)
	- [Reading & Writing](./reference/storage/read-write.md)
	- [Libraries](./reference/storage/libraries/index.md)

[laishawadhwa]

Will update the failing checks