Implement WASI "preview0" in wasmtime-wasi
#7548
Merged
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This commit implements the
wasi_unstable
module, sometimes referred to as "preview0", in thewasmtime-wasi
crate. Previously this was only implemented by thewasi-common
crate but now this is implemented for both meaning that the switch to preview2 won't lose this functionality.The preview0 WITX files are vendored like the preview1 files and the implementation of preview0 is exclusively implemented by delegating to the preview1 implementation.