nwchem: collect scf dipole

[loriab]

Description

This probably works, but needs some self-contained tests. Opening PR so I don't lose it.

Changelog description

Status

• Code base linted
• Ready to go

[codecov]

Codecov Report

❌ Patch coverage is 0% with 17 lines in your changes missing coverage. Please review.
✅ Project coverage is 71.47%. Comparing base (d18cfda) to head (1361b06).
⚠️ Report is 38 commits behind head on master.

❗ There is a different number of reports uploaded between BASE (d18cfda) and HEAD (1361b06). Click for more details.

HEAD has 1 upload less than BASE

Flag	BASE (d18cfda)	HEAD (1361b06)
	10	9

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