Recreate node-libofx build logic from scratch

[j-f1]

Currently, there is some code in the packages/node-libofx directory that builds the C++ code into a Wasm file using emscripten. It does not work. I think the whole thing needs to be deleted and rebuilt from scratch — I spent several hours on trying to get things working yesterday and was thoroughly unsuccessful.

Issues:

• https://github.com/llvm/llvm-project/issues/61555
• https://github.com/emscripten-core/emscripten/issues/10719
• Probably other things?

Some options to potentially explore:

• wait for the above issues to be fixed
• update the C++ projects to the latest version and hope for the best
• Use Zig’s build system instead of the existing makefiles?
• Maybe write a wrapper in Rust and give their build system a try?

This is a blocker for debugging issues like #794.

[Shazib]

There are a couple of other projects that implement OFX in js, is it worth exploring these as alternatives?

Libofxjs uses the same C++ library underneath, but uses node-gyp instead of emscripten, which we use anyway with better-sqlite3 etc, so perhaps we could drop the need to emscripten entirely.

There are also various pure JS implementations but these might require a bit more work to migrate and regression test.

[j-f1]

Would libofxjs work in the browser?

@sinistersnare contributed an experimental new OFX importer in #921, which we’re currently waiting for feedback on.