Refactor/jit fusion

[nathanielsimard]

The goal is to make the reading and write position of each operation explicit so we can actually customize that part with further fusion.

[codecov]

Codecov Report

Attention: Patch coverage is 95.02488% with 10 lines in your changes are missing coverage. Please review.

Project coverage is 86.61%. Comparing base (5bbc5ea) to head (91e6c1d).

Files	Patch %	Lines
...burn-jit/src/codegen/dialect/gpu/procedure/read.rs	63.63%	4 Missing ⚠️
crates/burn-jit/src/codegen/compilation.rs	88.00%	3 Missing ⚠️
crates/burn-jit/src/codegen/dialect/gpu/scope.rs	93.54%	2 Missing ⚠️
...urn-jit/src/codegen/dialect/gpu/procedure/write.rs	50.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1750      +/-   ##
==========================================
- Coverage   86.61%   86.61%   -0.01%     
==========================================
  Files         700      700              
  Lines       83427    83477      +50     
==========================================
+ Hits        72257    72300      +43     
- Misses      11170    11177       +7     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[louisfd]

LGTM