kernel: initial shared kernel state #94

Job	Run time
build-kernel-aarch64 (dev, --all-features)	55s
build-kernel-x86_64 (dev, --all-features)	1m 16s
build-limine-aarch64 (dev, --all-features)	55s
build-kernel-x86_64 (dev, --no-default-features)	1m 6s
boot-protocol-header	52s
build-kernel-aarch64 (dev, --no-default-features)	56s
build-limine-aarch64 (dev, --no-default-features)	56s
build-kernel-aarch64 (release, --all-features)	57s
build-kernel-x86_64 (release, --all-features)	1m 9s
build-limine-aarch64 (release, --all-features)	58s
build-limine-x86_64 (dev, --all-features)	1m 6s
build-kernel-aarch64 (release, --no-default-features)	55s
build-kernel-x86_64 (release, --no-default-features)	1m 7s
build-limine-x86_64 (dev, --no-default-features)	1m 17s
build-limine-aarch64 (release, --no-default-features)	58s
build-limine-x86_64 (release, --all-features)	1m 4s
build-limine-x86_64 (release, --no-default-features)	1m 9s
lint-clippy	1m 22s
lint-docs	1m 38s
lint-python	9s
lint-rustfmt	41s
unit-test	59s
	22m 25s

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