add wasm codegen

[nikolaevx]

No description provided.

[codspeed-hq]

Merging this PR will degrade performance by 25.13%

❌ 1 regressed benchmark
✅ 4 untouched benchmarks
🆕 2 new benchmarks

⚠️ Please fix the performance issues or acknowledge them on CodSpeed.

Performance Changes

	Benchmark	BASE	HEAD	Efficiency
🆕	binding_at_enum_variant	N/A	22.3 µs	N/A
🆕	binding_at_large_body	N/A	20.4 µs	N/A
❌	goto_definition_complex	23.7 µs	31.7 µs	-25.13%

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_{Comparing wasm (d7fad8a) with master (8bd393f)}