feat(layers): Port ScatterplotLayer to WebGPU / WGSL

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Background

• test/apps/webgpu - yarn start-local
• Partial start on a WebGPU scatterplot layer
• Shader modules, especially project, need to be implemented, some minimal stubs have been added to ScatterplotLayer to enable rendering

Change List

• Add examples/website/webgpu
• Add webgpuAdapter
• Add WGSL source for scatterplot layer
• Disable hooks for WGSL
• Minor fixes

Remaining

• Keep following shader module dependencies and port code / resolve issues.