add grokker processor

[ekneg54]

• reimplement grok with updated default ecs conform grok patterns
• apply adaption GrokWraper to own grok implementation
• add rule with tests
• add processor with tests
  • add getter logic to additional grok patterns dir (we should be able to serve this via http)
  • add oniguruma syntax support
• add documentation
• add jupyther notebook example

[gigallucci]

LGTM

[codecov-commenter]

Codecov Report

Patch coverage: 97.84% and project coverage change: +0.26 🎉

Comparison is base (735e10d) 91.93% compared to head (fa38813) 92.20%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #363      +/-   ##
==========================================
+ Coverage   91.93%   92.20%   +0.26%     
==========================================
  Files         127      130       +3     
  Lines        9007     9241     +234     
==========================================
+ Hits         8281     8521     +240     
+ Misses        726      720       -6     

Impacted Files	Coverage Δ
logprep/util/pre_detector_rule_matching_tester.py	0.00% <0.00%> (ø)
logprep/processor/grokker/processor.py	96.61% <96.61%> (ø)
logprep/util/grok/grok.py	98.31% <98.31%> (ø)
logprep/framework/pipeline.py	95.02% <100.00%> (+0.02%)	⬆️
logprep/processor/dissector/rule.py	100.00% <100.00%> (ø)
logprep/processor/grokker/rule.py	100.00% <100.00%> (ø)
logprep/processor/processor_strategy.py	100.00% <100.00%> (ø)
logprep/registry.py	100.00% <100.00%> (ø)
logprep/util/auto_rule_tester/auto_rule_tester.py	86.65% <100.00%> (ø)
...rep/util/auto_rule_tester/grok_pattern_replacer.py	94.06% <100.00%> (ø)

... and 4 files with indirect coverage changes

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