[PoC] Only load types that are required #2

Job	Run time
Build Documentation	22s
Build and Lint	2m 19s
Run tests on previous stable Go	2m 57s
Run tests (Windows) (main)	5s
Run tests (Linux) (mainline)	1m 30s
Run tests on arm64	1s
Run tests (Linux) (stable)	3m 0s
Run tests (Linux) (6.6)	1m 26s
Run tests (Linux) (6.1)	1m 35s
Run tests (Linux) (5.15)	1m 40s
Run tests (Linux) (5.10)	1m 36s
Run tests (Linux) (5.4)	1m 34s
Run tests (Linux) (4.19)	1m 39s
Run tests (Linux) (4.14)	3m 0s
Run tests (Linux) (4.9)	2m 16s
	25m 0s

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