[docs] Add md-book and refactor/organizing docs

[komer3]

General:

• Have you removed all sensitive information, including but not limited to access keys and passwords?
• Have you checked to ensure there aren't other open or closed Pull Requests for the same bug/feature/question?

Pull Request Guidelines:

1. Does your submission pass tests?
2. Have you added tests?
3. Are you addressing a single feature in this PR?
4. Are your commits atomic, addressing one change per commit?
5. Are you following the conventions of the language?
6. Have you saved your large formatting changes for a different PR, so we can focus on your work?
7. Have you explained your rationale for why this feature is needed?
8. Have you linked your PR to an open issue

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 71.07%. Comparing base (ec8a70a) to head (855b407).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #298   +/-   ##
=======================================
  Coverage   71.07%   71.07%           
=======================================
  Files          12       12           
  Lines        2216     2216           
=======================================
  Hits         1575     1575           
  Misses        490      490           
  Partials      151      151           

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[rahulait]

Suggested change

	- NodeBalancers require nodes to have private IP addresses
	- NodeBalancers require nodes to have linode specific [private IP addresses](https://techdocs.akamai.com/cloud-computing/docs/managing-ip-addresses-on-a-compute-instance#types-of-ip-addresses)

[rahulait]

Do we need to add links here?

[komer3]

We don't need to for mdbook tbh. Just added them incase some is navigating from README in root dir. Should help with navigation a bit?