Add extraction of certificate data.

[J08nY]

This will fix #388.

[codecov]

Codecov Report

Attention: 48 lines in your changes are missing coverage. Please review.

Comparison is base (131489e) 69.61% compared to head (4592f97) 68.57%.

Files	Patch %	Lines
src/sec_certs/sample/cc.py	76.60%	44 Missing ⚠️
...ec_certs/model/references_nlp/segment_extractor.py	0.00%	3 Missing ⚠️
src/sec_certs/dataset/cc.py	98.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #389      +/-   ##
==========================================
- Coverage   69.61%   68.57%   -1.04%     
==========================================
  Files          62       62              
  Lines        7548     7565      +17     
==========================================
- Hits         5254     5187      -67     
- Misses       2294     2378      +84     

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