make print parameter summary nicer

[arrjon]

This pull request includes a small update to the print_parameter_summary method in the pypesto/problem/base.py file to add more detailed information about the parameters. I added the fields scale and fixedVal (scaled). This can be used to verify that the problem is loaded as expected. Any other wishes what to include here?

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Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 84.35%. Comparing base (109bec9) to head (571b9fa).

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Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #1549   +/-   ##
========================================
  Coverage    84.34%   84.35%           
========================================
  Files          163      163           
  Lines        13987    13987           
========================================
+ Hits         11798    11799    +1     
+ Misses        2189     2188    -1     

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