Feat: extend SemanticStack with registers

[mrLSD]

Description

🥇 Registers

Implemented register numbers for expressions and assignment operations.

The main point is to track correct expressions, values, and function parameters.

• issue Add registers number to SemanticStackContext definitions #13

🥈 Toy Codegen

As an example of usage for semantic-alalyzer-rs is implemented as a separate project toy-codegen. It shows how to use SemanticStack for Codegen generation. Added to README.md.

📝 Documentation

• Extended README docs
• Extended code documentation for SemanticStack functions generator.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (5ad44c2) 99.62% compared to head (c662618) 100.00%.

Additional details and impacted files

@@             Coverage Diff             @@
##           master       #17      +/-   ##
===========================================
+ Coverage   99.62%   100.00%   +0.37%     
===========================================
  Files           9         9              
  Lines        1610      1650      +40     
===========================================
+ Hits         1604      1650      +46     
+ Misses          6         0       -6     

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