add wasmtime-wasi-io and custom async executor to min-platform example (#10128)

* add wasmtime-wasi-io and custom async executor to min-platform example

* make it possible to find example from wasm

add wasmtime-wasi-io and custom async executor to min-platform example (#10128)

* add wasmtime-wasi-io and custom async executor to min-platform example

* make it possible to find example from wasmtime-wasi-io docs

prtest:full

* fix comment

* add wasm32-wasip2 target for min-platform ci

and enable signals based traps when running with wasi disabled,
because at the moment without signals based traps no native code can be
loaded so the embedding never actually executes wasm. this ensures the
heap size setting when not(feature = "wasi") is checked by execution

* fix cbindgen version in ci

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Revamp wasi example and related docs (#9788)

* update examples/wasi/main.rs and related doc with a runtime issue

* simplify building instruction

* fix runtime issue

* add a comment and cargo fmt

Revamp wasi example and related docs (#9788)

* update examples/wasi/main.rs and related doc with a runtime issue

* simplify building instruction

* fix runtime issue

* add a comment and cargo fmt

* revamped wasi-async

* remove the example of custom host states and add references

* add calling function dynamically

* cargo fmt

* add post_return

* update wording

* add expects

* change wording from "module" to "component"

* fix CMakeLists.txt

* compile wasi example with wasip1 to make the outdated WASIp1 C example happy

* rename wasi examples

* fix wording

* fix format

* add wasm32-wasip2 target

* Revert "add wasm32-wasip2 target"

This reverts commit 0aa610f6ce8c2617889238db2961f545b661ca27.

* add wasm32-wasip2 target for test_capi job

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