Update README to include comprehensive local deploy, test, and build steps

[tylergraff]

Reference Issues or PRs

What does this implement/fix?

Put a x in the boxes that apply

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds a feature)
• Breaking change (fix or feature that would cause existing features not to work as expected)
• Documentation Update
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no API changes)
• Build related changes
• Other (please describe):

Testing

• Did you test the pull request locally?
• Did you add new tests?

Any other comments?

[krassowski]

I wonder if adding this (or making improvements in general) to https://www.nebari.dev/docs/how-tos/nebari-local/ (in https://github.com/nebari-dev/nebari-docs) would be more maintainable.

[krassowski]

This is not always as simple (nebari-dev/nebari-docs#403).

[marcelovilla]

@tylergraff I also think it makes more sense to add this to the docs rather than the README. Do you have the bandwith to do that?

[tylergraff]

Yes, I have bandwidth to move this to the docs. I'll cut a PR there and tag you for review.

[krassowski]

FYI there might be some overlap with nebari-dev/nebari-docs#449