Uniformed server side stdout prints and parseCLI

[marcoSanti]

This commit cleans up and standardizes the various message prints that the server performs during its execution. It also updates the parseCLI method; instead of instantiating objects directly, it now populates a structure that is returned with the parsed parameters. This structure is then used to instantiate objects from the CAPIO server main function.

[codecov]

Codecov Report

❌ Patch coverage is 54.97382% with 86 lines in your changes missing coverage. Please review.
✅ Project coverage is 63.43%. Comparing base (7c13f82) to head (bd8cb2e).
⚠️ Report is 5 commits behind head on master.

Files with missing lines	Patch %	Lines
capio/server/src/cli_parser.cpp	42.52%	14 Missing and 36 partials ⚠️
capio/server/include/remote/listener.hpp	47.05%	3 Missing and 6 partials ⚠️
capio/server/src/mpi_backend.cpp	0.00%	6 Missing and 2 partials ⚠️
capio/server/capio_server.cpp	68.18%	1 Missing and 6 partials ⚠️
capio/common/shm.hpp	28.57%	3 Missing and 2 partials ⚠️
capio/server/include/utils/signals.hpp	60.00%	2 Missing and 2 partials ⚠️
capio/server/include/utils/server_println.hpp	78.57%	1 Missing and 2 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #238      +/-   ##
==========================================
- Coverage   63.84%   63.43%   -0.42%     
==========================================
  Files          77       79       +2     
  Lines        3214     3268      +54     
  Branches     1997     2008      +11     
==========================================
+ Hits         2052     2073      +21     
- Misses        381      398      +17     
- Partials      781      797      +16     

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[GlassOfWhiskey]

LGTM