Upgrade deps

[LioQing]

• Upgrade all dependencies, mainly wgpu to 0.29 and glam to 0.32
• Export wesl in addition to the existing wgpu and glam

[Copilot]

Pull request overview

Updates the crate for newer graphics dependencies, mainly to support wgpu 29 and glam 0.32, while also exposing wesl from the public API. In the codebase, this mostly affects GPU initialization paths, compute pipeline setup, and dependency metadata.

Changes:

• Bump core dependencies in Cargo.toml/Cargo.lock, especially wgpu, glam, bytemuck, and oneshot.
• Adjust wgpu setup code in tests/examples and update compute pipeline layout creation for the new API.
• Re-export wesl from the crate root and refresh the checked-in coverage badge.

Reviewed changes

Copilot reviewed 6 out of 9 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
tests/common/test_context.rs	Updates test GPU instance creation for the new wgpu descriptor API.
src/lib.rs	Adds a public re-export for wesl.
src/compute_bundle.rs	Adapts pipeline layout creation to the wgpu 29 bind-group-layout API.
examples/read_spz.rs	Updates example instance creation to the new wgpu API.
examples/read_ply.rs	Updates example instance creation to the new wgpu API.
coverage/badge.json	Changes the displayed coverage percentage.
Cargo.toml	Bumps direct dependency versions and adjusts oneshot features.
Cargo.lock	Refreshes the lockfile for the dependency upgrades.

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