Emit Producers section when compiling to wasm #96334

From the official Wasm tool conventions:

The purpose of the producers section is to provide an optional, highly-structured record of all the distinct tools that were used to produce a given WebAssembly module. A primary purpose of this record is to allow broad analysis of toolchain usage in the wild, which can help inform both wasm producers and consumers.

The producers section is a custom section and thus has no semantic effects and can be stripped at any time. Since the producers section is relatively small, tools are encouraged to emit the section or include themselves in an existing section by default, keeping the producers section even in release builds.

This allows tools like https://www.dylibso.com/products/modsurfer/ to identify the source language of a given wasm file.