Add Version number to custom section

[willemneal]

Adding this here to track it. With binaryen's support for creating custom sections, it would be a good idea to add the version of the compiler used to generate the binary in a custom section.

[dcodeIO]

Related: There's a producers section under tool conventions but that's a bit controversial.

[willemneal]

Ah I see. I think that we should just have it as an option. For example, having it for smart contracts where you only need the full binary once.

[dcodeIO]

Btw, with the new transforms, it should be possible to append additional custom sections to a binary, incl. potential additional version numbers not just of asc but also other parts of the specific toolchain being used.

[stale]

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