Move the TreeDesc fields and finish adding cache line markers to State #1178

Job	Run time
Build and test (stable, ubuntu-latest, x86_64-unknown-linux-gnu)	1m 1s
Build and test (msrv, ubuntu-latest, x86_64-unknown-linux-gnu)	58s
cargo-c dynamic library	10s
Clippy	10s
QEMU build & test (stable, ubuntu-latest, s390x-unknown-linux-gnu, s390x-linux-gnu-gcc)	41s
Build and test (beta, ubuntu-latest, x86_64-unknown-linux-gnu)	1m 4s
Clippy (--no-default-features --features="c-allocator")	11s
QEMU build & test (stable, ubuntu-latest, i686-unknown-linux-gnu, i686-linux-gnu-gcc)	45s
Clippy (--no-default-features --features="rust-allocator")	23s
Build and test (stable, macos-latest, x86_64-apple-darwin)	1m 37s
Smoke-test fuzzing targets (default)	2m 29s
Build and test (stable, macos-14, aarch64-apple-darwin)	58s
Smoke-test fuzzing targets (c-allocator)	2m 33s
Build and test (stable-x86_64-gnu, windows-2022, x86_64-pc-windows-gnu)	2m 4s
Smoke-test fuzzing targets (rust-allocator)	2m 37s
Smoke-test fuzzing targets (stable, macos-14, aarch64-apple-darwin)	2m 33s
vanilla dynamic library	15s
Miri	1m 49s
run flate2 test suite	25s
wasm32	37s
	23m 20s

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