sys: add type safe Pointer wrapper #1593

Job	Run time
Build and Lint	2m 19s
Build Documentation	20s
Run tests on arm64	35s
Run tests (Windows) (main)	5m 46s
Run tests (Linux) (mainline)	1m 5s
Run tests on previous stable Go	2m 4s
Run tests (Linux) (stable)	1m 2s
Run tests (Linux) (6.6)	1m 0s
Run tests (Linux) (6.1)	57s
Run tests (Linux) (5.15)	1m 10s
Run tests (Linux) (5.10)	1m 12s
Run tests (Linux) (5.4)	1m 4s
Run tests (Linux) (4.19)	1m 0s
Run tests (Linux) (4.14)	1m 12s
Run tests (Linux) (4.9)	1m 13s
	21m 59s

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