Refactor `sint8` to use `BlockExt` trait

[RajeshRk18]

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Checklist

• [ ] Linked to Github Issue
• [ ] Unit tests added
• [ ] Integration tests added.
• [ ] This change requires new documentation.
  • [ ] Documentation has been added/updated.

[edg-l]

Thanks for you contribution!

Looks like clippy is complaining, looks good otherwise.

[RajeshRk18]

Ready for review now @igaray @edg-l

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 98.71795% with 1 line in your changes missing coverage. Please review.

Project coverage is 91.79%. Comparing base (eacacf7) to head (e0563dd).

Files	Patch %	Lines
src/libfuncs/sint8.rs	98.71%	1 Missing :warning:

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #637      +/-   ##
==========================================
- Coverage   91.82%   91.79%   -0.04%     
==========================================
  Files         115      115              
  Lines       34254    34126     -128     
==========================================
- Hits        31455    31326     -129     
- Misses       2799     2800       +1     

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[edg-l]

has conflicts

[edg-l]

Closing as the author hasnt fixed the conflicts