Support "linear writes" in Rust `future` bindings #3054

Job	Run time
Test (ubuntu-latest, c)	1m 52s
Test Async	1m 48s
Test (ubuntu-latest, rust)	2m 46s
Check	2m 39s
Test (ubuntu-latest, csharp)	12m 42s
Build wit-bindgen (x86_64-linux, ubuntu-latest)	2m 39s
Test (macos-latest, c)	2m 31s
Build wit-bindgen (x86_64-macos, macos-latest, x86_64-apple-darwin)	2m 19s
Rustfmt	12s
Test (macos-latest, rust)	2m 50s
Build wit-bindgen (aarch64-macos, macos-latest, aarch64-apple-darwin)	2m 54s
Crate Unit Tests	2m 2s
Test (windows-latest, c)	3m 58s
Build wit-bindgen (x86_64-windows, windows-latest)	5m 24s
Test (windows-latest, rust)	5m 9s
Build wit-bindgen (aarch64-linux, ubuntu-latest, aarch64-unknown-linux-gnu)	2m 57s
Test (windows-latest, csharp)	16m 46s
verify-publish	2m 35s
Record the result of testing and building steps	1s
	1h 14m 4s

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