refactor: move jp extensions in a top level package

[eddycharly]

Explanation

Move jp extensions in a top level package.

[codecov]

Codecov Report

Attention: Patch coverage is 50.00000% with 1 line in your changes missing coverage. Please review.

Project coverage is 23.24%. Comparing base (42154f1) to head (ec12054).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
pkg/engine/assert/binding.go	0.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #490   +/-   ##
=======================================
  Coverage   23.24%   23.24%           
=======================================
  Files          88       88           
  Lines        4092     4092           
=======================================
  Hits          951      951           
  Misses       3055     3055           
  Partials       86       86           

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