Add storage_variables printer #2262

Job	Run time
tests (ubuntu-latest, unit, 3.8)	52s
tests (ubuntu-latest, unit, 3.12)	47s
tests (ubuntu-latest, integration, 3.8)	3m 3s
tests (ubuntu-latest, integration, 3.12)	3m 12s
tests (ubuntu-latest, tool, 3.8)	52s
tests (ubuntu-latest, tool, 3.12)	46s
tests (windows-2022, unit, 3.8)	1m 30s
tests (windows-2022, unit, 3.12)	1m 23s
tests (windows-2022, integration, 3.8)	3m 38s
tests (windows-2022, integration, 3.12)	3m 22s
tests (windows-2022, tool, 3.8)	2m 37s
tests (windows-2022, tool, 3.12)	2m 34s
coverage	17s
	24m 53s

Provide feedback