refactor: Rename primitives namespace #32

Job	Run time
Security Scan	25s
Lint/Format Check	33s
Build and Test (ubuntu-latest, 9.0.x)	33s
Build and Test (macos-latest, 9.0.x)	28s
Conformance Tests (ubuntu-latest, linux_amd64)	30s
Conformance Tests (macos-latest, darwin_arm64)	45s
	3m 14s

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