Add `GetHost` to generated bindings for more flexible linking #23400

Job	Run time
Determine CI jobs to run	8s
Rustfmt	21s
Clang format	8s
Check	12m 28s
Cargo vet	0s
Cargo deny	0s
Check Windows ARM64	0s
Doc build	0s
Nightly tests	0s
Test Linux x86_64	20m 46s
Run benchmarks	0s
Build wasi-preview1-component-adapter	0s
Build wasmtime-target-wasm32	0s
Test C-API ${{ matrix.os }}	0s
Test the min-platform example	0s
Release build for ${{ matrix.build }}	0s
Meta deterministic check	0s
Miri	0s
verify-publish	0s
Cargo vet failed on a Pull Request	0s
Record the result of testing and building steps	1s
push-tag	0s
	33m 52s

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