refactor printout formatter

[rozyczko]

This pull request updates the numeric formatting logic in the summary.py module to provide more consistent and flexible display of numerical values in summary tables. The main change is the introduction of a new _format_value function that replaces the previous _format_error function, allowing for configurable significant figures and improved formatting for both values and errors.

Numeric formatting improvements:

• Replaced the _format_error function with a new _format_value function, which formats any numeric value (not just errors) with a configurable number of significant figures, falling back to exponential notation for long strings and always displaying zero as '0.0'.
• Updated the _sample_section method to use _format_value for both parameter values (3 significant figures) and errors (2 significant figures), ensuring consistent formatting in the sample summary.
• Updated the _experiments_section method to use _format_value for experiment range minimum and maximum values (2 significant figures), improving the clarity and consistency of experiment data display.

[codecov]

Codecov Report

❌ Patch coverage is 0% with 9 lines in your changes missing coverage. Please review.
✅ Project coverage is 0.00%. Comparing base (74e9a5b) to head (0f830ed).

Files with missing lines	Patch %	Lines
src/easyreflectometry/summary/summary.py	0.00%	9 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##           develop    #358   +/-   ##
=======================================
  Coverage     0.00%   0.00%           
=======================================
  Files           40      40           
  Lines         2742    2742           
=======================================
  Misses        2742    2742           

Flag	Coverage Δ
integration	0.00% <0.00%> (ø)
unittests	0.00% <0.00%> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
src/easyreflectometry/summary/summary.py	0.00% <0.00%> (ø)

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.