fully replace self-compiled YARA with yara-python

[jstucke]

Goal: fully replace CLI YARA calls with the yara-python module
Changes:

• introduces a new helperFunctions.yara module with YARA-related common functions
• software_components: replaces the no_text_file yara signature with a meta entry and uses the file_type plugin as a dependency
• changed various modules to use yara-python/helperFunctions.yara:
  • yara_binary_search
  • extract_os_names
  • yara_signature_testing
  • compile_yara_signatures

[codecov-commenter]

Codecov Report

❌ Patch coverage is 96.05735% with 11 lines in your changes missing coverage. Please review.
✅ Project coverage is 92.47%. Comparing base (31bfb8f) to head (1978c4c).
⚠️ Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
src/helperFunctions/yara.py	96.47%	3 Missing ⚠️
src/test/unit/helperFunctions/test_yara.py	96.20%	3 Missing ⚠️
src/helperFunctions/yara_binary_search.py	92.00%	2 Missing ⚠️
src/test/yara_signature_testing.py	90.90%	2 Missing ⚠️
...s/software_components/internal/extract_os_names.py	94.11%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1475      +/-   ##
==========================================
+ Coverage   92.41%   92.47%   +0.06%     
==========================================
  Files         370      371       +1     
  Lines       20847    20915      +68     
==========================================
+ Hits        19266    19342      +76     
+ Misses       1581     1573       -8     

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