gync: remove `oro-sync` in lieu of `spin` crate [no-ci] #115

Job	Run time
build-kernel-x86_64 (dev, --all-features)	1m 23s
boot-protocol-header	1m 9s
build-kernel-x86_64 (dev, --no-default-features)	1m 12s
build-limine-aarch64 (dev, --all-features)	1m 12s
build-kernel-aarch64 (dev, --all-features)	1m 12s
build-kernel-x86_64 (release, --all-features)	1m 22s
build-limine-aarch64 (dev, --no-default-features)	1m 25s
build-kernel-aarch64 (dev, --no-default-features)	1m 13s
build-kernel-x86_64 (release, --no-default-features)	1m 28s
build-limine-aarch64 (release, --all-features)	1m 31s
build-kernel-aarch64 (release, --all-features)	1m 27s
build-limine-x86_64 (dev, --all-features)	1m 7s
build-limine-aarch64 (release, --no-default-features)	1m 26s
build-kernel-aarch64 (release, --no-default-features)	1m 12s
build-limine-x86_64 (dev, --no-default-features)	1m 38s
build-limine-x86_64 (release, --all-features)	1m 35s
lint-clippy	1m 4s
build-limine-x86_64 (release, --no-default-features)	1m 35s
lint-docs	2m 9s
lint-python	11s
lint-rustfmt	51s
unit-test	35s
	27m 57s

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