Add Initializes aspect for package Pointer_Holders #24

Job	Run time
build (ubuntu-latest, ^14)	48s
setup	1m 32s
build (ubuntu-latest, ^15)	58s
build (windows-latest, ^15)	2m 29s
build (windows-latest, ^14)	2m 38s
prove (basic_example)	1m 15s
prove (multiple_service_users)	3m 26s
prove (discard_example)	1m 43s
	14m 49s

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