[proposal] [dart2wasm] Wasm component model / WASI support

[iapicca]

PROPOSAL

provide support for WASI as a build target for dart compile
eg: dart compile wasm -t wasi or dart compile wasi

NOTE

1. this issue is part / disambiguation of Support non-JS wasm runtimes, (see the question)
   if the latter intends to include WASI support, feel free to close this issue

2. "similar" GC collected programming language already provide support for WASI
   eg: golang, C#, kotlin

cc: @askeksa, @eyebrowsoffire, @lesnitsky, @yjbanov, @mkustermann, @osa1

[dart-github-bot]

Summary: This proposal suggests adding support for WASI (WebAssembly System Interface) as a build target for the dart compile command, enabling Dart code to run in WASI environments. This would allow Dart to leverage the portability and security benefits of WASI.

[kevmoo]

See also #53884