Replace mikktspace-wasm with meshopt_TangentCompatible

As of v1.2, the `meshoptimizer` library includes a tangent generation implementation, advantages described at:

https://github.com/zeux/meshoptimizer/releases/tag/v1.2

Consider [benchmarking](https://github.com/donmccurdy/glTF-Transform/tree/main/benchmarks) and replacing my existing implementation (https://github.com/donmccurdy/mikktspace-wasm) with meshoptimizer's.

Start with the meshoptimizer v1.2 release notes and the existing benchmarks directory at benchmarks/. Benchmark meshoptimizer's tangent generation against the current mikktspace-wasm implementation, then replace the existing implementation if results support it and confirm the benchmark comparison is recorded.

Written by the indexing model from the issue text.