Add Semantic Caching

[svilupp]

• Added a launcher function launch to make it easier to launch the app.
• Semantic caching enabled by SemanticCaches.jl. You can change it by setting cached=false in the launch() function.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 36 lines in your changes missing coverage. Please review.

Project coverage is 0.72%. Comparing base (30605f7) to head (898daf6).

Files	Patch %	Lines
src/CacheLayer.jl	0.00%	27 Missing ⚠️
src/server.jl	0.00%	9 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff            @@
##            main     #16      +/-   ##
========================================
- Coverage   0.78%   0.72%   -0.07%     
========================================
  Files         13      15       +2     
  Lines        380     416      +36     
========================================
  Hits           3       3              
- Misses       377     413      +36     

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