Add WebGPU support

[GopherJ]

Describe your changes

Add WebGPU prover, companion PR: https://github.com/0xPolygonMiden/miden-gpu/pull/17, mostly based on @cf 's awesome work at: https://github.com/cf/miden-vm/tree/async_prover

Checklist before requesting a review

• Repo forked and branch created from next according to naming convention.
• Commit messages and codestyle follow conventions.
• Relevant issues are linked in the PR description.
• Tests added for new functionality.
• Documentation/comments updated according to changes.

[GopherJ]

WebGPUTraceLde

pub async fn new(
    trace_info: &TraceInfo,
    main_trace: &ColMatrix<Felt>,
    domain: &StarkDomain<Felt>,
    webgpu_hash_fn: HashFn,
) -> (Self, TracePolyTable<E>) {
    // extend the main execution trace and build a Merkle tree from the extended trace
    let (main_segment_lde, main_segment_tree, main_segment_polys) =
        build_trace_commitment_sync::<E, Felt, H>(main_trace, domain); // <--- using sync because of a rust type hint issue

    let trace_poly_table = TracePolyTable::new(main_segment_polys);
    let trace_lde = WebGPUTraceLde {
        main_segment_lde,
        main_segment_tree,
        aux_segment_lde: None,
        aux_segment_tree: None,
        blowup: domain.trace_to_lde_blowup(),
        trace_info: trace_info.clone(),
        webgpu_hash_fn,
    };

    (trace_lde, trace_poly_table)
}

currently I'm using build_trace_commitment_sync because rust compiler seems has a type hint issue, once that's resolved we can switch to use build_trace_commitment(main_trace, domain, webgpu_hash_fn).await and the PR should then be ready for review