Syntax for wasi-virt support

Assessment

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Description

virtualize {
  fs: {
    mounts: {
       "/guest-path": "./host-path",
    },
    preopens: {
       "/guest-path": "./host-path",
    },
  },
  env: {
    vars: {
      "FOO": "BAR",
    },
    inherit: ["HOST-VAR"],
    // or: inherit: *,
  }
  // other WASI-Virt configuration here
}

Getting set up

First steps

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3. Fork the repository and make your change on a branch.
4. Open a pull request that references the issue number.

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