feature: add support for pywasm runtime

[mohanson]

Pywasm has completed support for WASI Preview 1 in v2.1.0.

[mohanson]

Hi, can you evaluate whether this PR can be merged? Currently pywasm can fully pass the test suite under linux and darwin.

===== Test results =====
Runtime: pywasm: https://github.com/mohanson/pywasm/releases/latest
Suite: WASI Assemblyscript tests
  Total: 12
  Passed:  12
  Failed:  0
  Skipped: 0

Suite: WASI C tests
  Total: 14
  Passed:  14
  Failed:  0
  Skipped: 0

Suite: WASI Rust tests
  Total: 46
  Passed:  46
  Failed:  0
  Skipped: 0

Test suites: 3 passed, 3 total
Tests:       72 passed, 72 total

[loganek]

Hi @mohanson ,
I wouldn't mind to add this runtime to a daily check, but there's a few things to note:

• please rebase your PR on top of the latest main branch to make it green
• we normally try to avoid adding new adapters to the source code as we don't want to take responsibility of maintaining them. Instead, you should 1) add this adapter to your codebase, 2) update https://github.com/WebAssembly/wasi-testsuite/blob/main/.github/workflows/daily-runtime-validation.yml to make use of it. You can look at e.g. wazero for example how to integrate.

Let me know if you have any further questions.

[mohanson]

Hi @loganek

1. I have rebased the pr to the latest main branch, and I need your approval workflow.
2. I have referenced wasi-testsuite in my own codebase, and I will also maintain the pywasm adapter in wasi-testsuite.
3. The github action has been updated and made available. Refer to https://github.com/libraries/wasi-testsuite/actions/runs/16281686594/job/45972445592