feature request: support for WASI preview 2 component model

The example code doesn't compile with wat2wasm

https://github.com/WebAssembly/component-model/blob/main/design/mvp/Explainer.md#component-definitions

(component
  (component
    (core module (func (export "one") (result i32) (i32.const 1)))
    (core module (func (export "two") (result f32) (f32.const 2)))
  )
  (core module (func (export "three") (result i64) (i64.const 3)))
  (component
    (component
      (core module (func (export "four") (result f64) (f64.const 4)))
    )
  )
  (component)
)

$ wat2wasm --version
1.0.34
$ wat2wasm main.wat 
main.wat:1:2: error: unexpected token "component", expected a module field or a module.
(component
 ^^^^^^^^^
main.wat:2:3: error: unexpected token (, expected EOF.
  (component
  ^

Other tools that support the component model https://component-model.bytecodealliance.org/language-support.html#building-a-component-with-wasm-tools

Start by reading the linked Component Model explainer and reproducing the failure with the provided WAT example and wat2wasm 1.0.34. Trace wat2wasm's parsing entry point to determine the scope of component support; done means the example compiles successfully.