Feat: Add option keeping history

[cosmoquester]

• Add option to keep engrams' history

[codecov]

Codecov Report

Attention: Patch coverage is 91.89189% with 9 lines in your changes missing coverage. Please review.

Project coverage is 94.92%. Comparing base (c13aeb2) to head (40e30ec).
Report is 4 commits behind head on master.

Files	Patch %	Lines
memoria/memoria.py	52.94%	6 Missing and 2 partials ⚠️
memoria/history_manager.py	97.82%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master      #52      +/-   ##
==========================================
- Coverage   95.26%   94.92%   -0.34%     
==========================================
  Files          12       14       +2     
  Lines        1056     1163     +107     
  Branches       89      101      +12     
==========================================
+ Hits         1006     1104      +98     
- Misses         29       36       +7     
- Partials       21       23       +2     

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