Replace current error handling with "empty record" error handling

[nnansters]

Deal with metric failures by gracefully returning an "empty record".

This will be represented in the results as a row for a certain chunk for which the metric value and any derived values from that will be empty.
Chunk metadata, thresholds and non-failing metrics will still be present.

[codecov]

Codecov Report

Attention: 123 lines in your changes are missing coverage. Please review.

Comparison is base (d1a70ea) 80.06% compared to head (4343ee5) 79.33%.
Report is 1 commits behind head on main.

Files	Patch %	Lines
...nyml/performance_calculation/metrics/regression.py	2.70%	24 Missing and 12 partials ⚠️
...e_calculation/metrics/multiclass_classification.py	0.00%	18 Missing and 8 partials ⚠️
...performance_estimation/confidence_based/metrics.py	45.94%	20 Missing ⚠️
...mance_calculation/metrics/binary_classification.py	57.14%	10 Missing and 5 partials ⚠️
...rformance_estimation/direct_loss_estimation/dle.py	54.16%	9 Missing and 2 partials ⚠️
nannyml/performance_calculation/metrics/base.py	52.94%	8 Missing ⚠️
nannyml/drift/univariate/calculator.py	63.15%	7 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #361      +/-   ##
==========================================
- Coverage   80.06%   79.33%   -0.73%     
==========================================
  Files         107      107              
  Lines        7964     8042      +78     
  Branches     1446     1463      +17     
==========================================
+ Hits         6376     6380       +4     
- Misses       1264     1323      +59     
- Partials      324      339      +15     

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