feat: Added ReST and Google Style Docstring support

[Masara]

Closes #18.
Closes #19.

Summary of Changes

Added docstring parser for ReST and Google Style Docstrings.

[lars-reimann]

🦙 MegaLinter status: ✅ SUCCESS

Descriptor	Linter	Files	Fixed	Errors	Elapsed time
✅ PYTHON	black	10	0	0	0.86s
✅ PYTHON	mypy	10		0	1.94s
✅ PYTHON	ruff	10	0	0	0.02s
✅ REPOSITORY	git_diff	yes		no	0.0s

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[codecov]

Codecov Report

Merging #116 (2579edf) into main (6851d07) will increase coverage by 0.12%.
The diff coverage is 94.53%.

@@            Coverage Diff             @@
##             main     #116      +/-   ##
==========================================
+ Coverage   90.48%   90.61%   +0.12%     
==========================================
  Files          84       86       +2     
  Lines        4371     4495     +124     
==========================================
+ Hits         3955     4073     +118     
- Misses        416      422       +6     

Impacted Files	Coverage Δ
.../library_analyzer/processing/api/model/__init__.py	100.00% <ø> (ø)
.../api/docstring_parsing/_create_docstring_parser.py	77.77% <62.50%> (-5.56%)	⬇️
...ibrary_analyzer/processing/api/model/_docstring.py	92.15% <80.00%> (-2.97%)	⬇️
...rocessing/api/docstring_parsing/_restdoc_parser.py	97.67% <97.67%> (ø)
...cessing/api/docstring_parsing/_googledoc_parser.py	98.14% <98.14%> (ø)
...lyzer/processing/api/docstring_parsing/__init__.py	100.00% <100.00%> (ø)
...ocessing/api/docstring_parsing/_docstring_style.py	87.50% <100.00%> (+1.78%)	⬆️
src/library_analyzer/processing/api/model/_api.py	94.85% <100.00%> (+0.11%)	⬆️

[lukarade]

This looks good to me.