Feature/150 entity serialization

[AndreasLrx]

Description

Introduce a new serializer able to serialize an entire entity and its components. Either from the list of components explicitly or taking all entity components.

This is working but I'm not satisfied of the implementation and will certainly get a huge refactoring when I find a better solution.

Close #150

What type of PR is this? (check all applicable)

• Refactor
• Feature
• Bug Fix
• Optimization
• Documentation Update

[optional] Minor fixes

Fix FindToml++ file.

Added/updated tests?

• New tests written
• Existing tests updated
• Tests are not required because this is a documentation update
• I need help with writing tests

[codecov-commenter]

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Codecov Report

Attention: Patch coverage is 0% with 5 lines in your changes missing coverage. Please review.

Project coverage is 82.23%. Comparing base (42c5b14) to head (fc8e62d).

Files with missing lines	Patch %	Lines
src/ecstasy/storages/MapStorage.hpp	0.00%	3 Missing ⚠️
src/ecstasy/storages/AStorage.hpp	0.00%	2 Missing ⚠️

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Additional details and impacted files

@@            Coverage Diff             @@
##             main     #158      +/-   ##
==========================================
- Coverage   82.75%   82.23%   -0.53%     
==========================================
  Files          63       64       +1     
  Lines        1096     1103       +7     
  Branches      349      353       +4     
==========================================
  Hits          907      907              
- Misses        133      140       +7     
  Partials       56       56              

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