feat: pausable

[enitrat]

Time spent on this PR:

Pull request type

Please check the type of change your PR introduces:

• Bugfix
• Feature
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no api changes)
• Build related changes
• Documentation content changes
• Other (please describe):

What is the current behavior?

Resolves #1426

What is the new behavior?

• Add a Pausable feature that prevents from using public, state-modifying entrypoint into Kakarot.

---

This change is 

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 62.9%. Comparing base (8fa6718) to head (629b59a).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##            main   #1433     +/-   ##
=======================================
- Coverage   63.0%   62.9%   -0.1%     
=======================================
  Files         49      49             
  Lines       8347    8393     +46     
=======================================
+ Hits        5262    5287     +25     
- Misses      3085    3106     +21     

Flag	Coverage Δ
	62.9% <100.0%> (-0.1%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

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