use smallvec instead of inplace_it

[mockersf]

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Checklist

• [x] Run cargo clippy.
• [x] Run RUSTFLAGS=--cfg=web_sys_unstable_apis cargo clippy --target wasm32-unknown-unknown if applicable.
• [x] Add change to CHANGELOG.md. See simple instructions inside file.

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Description Remove inplace_it to use smallvec instead. While inlace_it tries to be clever with the size of the array used, I just set it to 32 in smallvec On latest nightly, inplace_it fails to compile. This will probably be fixed on Rust (https://github.com/rust-lang/rust/pull/99288) or inplace_it (https://github.com/NotIntMan/inplace_it/pull/11), but inplace_it hasn't been updated in a while.

Testing This is Vulkan only change and I don't have a Vulkan capable machine, so not tested a lot...

[notgull]

Could we use tinyvec instead and reduce the unsafe code surface?

[mockersf]

I went with smallvec as it's already in tree