Added REST web server to interface with capiocl::Engine

[marcoSanti]

This commit adds a new REST web server which allows users to externally update the configuration of a running capiocl::engine::Engine() instance.

[codecov-commenter]

Codecov Report

❌ Patch coverage is 95.93909% with 8 lines in your changes missing coverage. Please review.
✅ Project coverage is 98.03%. Comparing base (1657fe1) to head (1d9b52d).

Files with missing lines	Patch %	Lines
src/webapi.cpp	96.33%	3 Missing and 4 partials ⚠️
src/Engine.cpp	66.66%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #48      +/-   ##
==========================================
- Coverage   98.23%   98.03%   -0.20%     
==========================================
  Files          19       20       +1     
  Lines        1131     1326     +195     
  Branches      721      847     +126     
==========================================
+ Hits         1111     1300     +189     
- Misses          2        5       +3     
- Partials       18       21       +3     

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