Equivalence for `WasiCtx.insert_file` from wasmtime_wasi Rust crate

Hi, thanks for this amazing project.

I came across the [wasmtime_wasi](https://docs.wasmtime.dev/api/wasmtime_wasi/#) Rust crate and found the `WasiCtx` struct really handy, and especially for its `insert_file` function.

While not being able to identify the equivalence of `WasiCtx` from `wasmtime-go`, I see `WasiConfig` implements some similar functions, including [SetStderrFile](https://github.com/bytecodealliance/wasmtime-go/blob/v11.0.0/wasi.go#L121), [SetStdinFile](https://github.com/bytecodealliance/wasmtime-go/blob/v11.0.0/wasi.go#L87), and [SetStdoutFile](https://github.com/bytecodealliance/wasmtime-go/blob/v11.0.0/wasi.go#L104).

I was wondering if I missed anything or is it not yet supported? If so, are there such a plan to support some more (if not all) APIs available to the rust crates?