General bugfixes on capiocl

[marcoSanti]

• Fixed a wrong default value for CAPIO_CL_DEFAULT_WORKFLOW_NAME
• Fixed an issue when issuing capiocl::engine::Engine::print(), under which the tabulation was wrong

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.88%. Comparing base (e09ca20) to head (603a679).

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #54      +/-   ##
==========================================
- Coverage   98.03%   97.88%   -0.16%     
==========================================
  Files          20       20              
  Lines        1326     1326              
  Branches      847      847              
==========================================
- Hits         1300     1298       -2     
- Misses          5        6       +1     
- Partials       21       22       +1     

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