feat(dojo-bindgen): 2d+ arrays, bytearrays and enums serialization

[Larkooo]

• handle bytearrays in systems
• filter systems with ones with no output (to hide internal funcs)
• add helpers to get index from records

[codecov]

Codecov Report

Attention: Patch coverage is 71.49758% with 59 lines in your changes missing coverage. Please review.

Project coverage is 68.35%. Comparing base (1fe0488) to head (8e4393b).
Report is 1 commits behind head on main.

Files	Patch %	Lines
crates/dojo-bindgen/src/plugins/unity/mod.rs	71.49%	59 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2028      +/-   ##
==========================================
- Coverage   68.41%   68.35%   -0.07%     
==========================================
  Files         323      323              
  Lines       40258    40450     +192     
==========================================
+ Hits        27541    27648     +107     
- Misses      12717    12802      +85     

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