feat: replacing cluster engine with a simplified and clean library

[Tochemey]

closes #507

[codecov]

Codecov Report

Attention: Patch coverage is 66.66667% with 2 lines in your changes missing coverage. Please review.

Project coverage is 87.77%. Comparing base (7296141) to head (85fa977).

Files with missing lines	Patch %	Lines
actors/scheduler.go	0.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #508      +/-   ##
==========================================
- Coverage   87.85%   87.77%   -0.09%     
==========================================
  Files          46       46              
  Lines        4513     4515       +2     
==========================================
- Hits         3965     3963       -2     
- Misses        430      433       +3     
- Partials      118      119       +1     

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