wasm-decompile: expose NameOpts::None as arg

[python273]

It's quite inconvenient to find functions by indexes right now, as they are transformed. Also might be nice to add a comment with index as wasm2wat does (;123;)

wabt/src/tools/wasm-decompile.cc

Line 89 in 790bc04

GenerateNames(&module, static_cast<NameOpts>(NameOpts::AlphaNames));

[sbc100]

wasm-decompile is sadly unmaintained right now. Any contributions would be most welcome.