[spectec] Wasm 1.0: `Module_ok` missing the validated import and export types

[lzy0505]

The Wasm 1.0 Module_ok rule has the import external types ixt* and export external types xt* in its premises, but its conclusion returns only OK.

Current rule:

relation Module_ok: |- module : OK      hint(show "T-module")

The WebAssembly Specification, Release 1.0 PDF, Section 3.4:

“Then the module is valid with external types it* → et*.”

The conclusion of the formal rule is:

⊢ {types functype*, funcs func*, tables table*, mems mem*, globals global*,
   elem elem*, data data*, start start?, imports import*, exports export*}
  : it* → et*