Add sparse matrix normalization routines + sparse util tests #167

Job	Run time
Docs, Examples, and Eval	11m 7s
Conda Python 3.10 on macos-latest	4m 27s
Minimal Supported Dependencies	8m 52s
Conda Python 3.10 on windows-latest	15m 8s
Vanilla Python 3.10 on windows-latest	11m 40s
Conda Python 3.10 on ubuntu-latest	11m 14s
Vanilla Python 3.10 on ubuntu-latest	8m 50s
Conda Python 3.11 on macos-latest	5m 27s
Vanilla Python 3.10 on macos-latest	4m 44s
Conda Python 3.11 on windows-latest	18m 31s
Vanilla Python 3.11 on windows-latest	13m 8s
Conda Python 3.11 on ubuntu-latest	12m 12s
Vanilla Python 3.11 on ubuntu-latest	9m 34s
Vanilla Python 3.11 on macos-latest	4m 58s
Test Suite Results	24s
	2h 20m 16s

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