Refactoring 'import numpy' to 'as np'

[john-science]

What is the change?

Here I have change imports of "import numpy" to "import numpy as np" everywhere by default.

@opotowsky @albeanth I know there are a lot of changes here. I am sorry about that. (And I know this will require and SCRE.)

Also, the methodology I used to fix this alphabetized some imports. I tried to undo that where I could.

Why is the change being made?

To close #1775

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Checklist

• This PR has only one purpose or idea.
• Tests have been added/updated to verify any new/changed code.

• The code style follows good practices.
• The commit message(s) follow good practices.

• The release notes have been updated if necessary.
• The documentation is still up-to-date in the doc folder.
• The dependencies are still up-to-date in pyproject.toml.

[opotowsky]

Wowza, I'm a little dizzy, and much impressed!

Nice work, and there's a few string updates I'm assuming you'll want to implement but I'm approving anyway!