Wgpu fusion auto-vectorized operations

[nathanielsimard]

Fix #1111

[codecov]

Codecov Report

Attention: 143 lines in your changes are missing coverage. Please review.

Comparison is base (3c056a4) 85.59% compared to head (3409b39) 85.51%.
Report is 2 commits behind head on main.

❗ Current head 3409b39 differs from pull request most recent head e2fb3fb. Consider uploading reports for the commit e2fb3fb to get more accurate results

Files	Patch %	Lines
burn-wgpu/src/codegen/operator.rs	79.48%	64 Missing ⚠️
burn-wgpu/src/codegen/function.rs	65.95%	32 Missing ⚠️
burn-wgpu/src/fusion/elemwise/optimization.rs	71.87%	18 Missing ⚠️
burn-wgpu/src/codegen/variable.rs	75.00%	12 Missing ⚠️
burn-wgpu/src/fusion/elemwise/kernel.rs	91.86%	7 Missing ⚠️
burn-wgpu/src/codegen/kernel.rs	93.33%	3 Missing ⚠️
burn-wgpu/src/fusion/kernel.rs	96.84%	3 Missing ⚠️
burn-wgpu/src/codegen/shader.rs	88.23%	2 Missing ⚠️
burn-wgpu/src/fusion/elemwise/builder.rs	88.23%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1123      +/-   ##
==========================================
- Coverage   85.59%   85.51%   -0.09%     
==========================================
  Files         512      513       +1     
  Lines       55968    56593     +625     
==========================================
+ Hits        47907    48394     +487     
- Misses       8061     8199     +138     

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[louisfd]

Looks very good to me, vec4 all the way!!

[louisfd]

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