Add Vectorstore instrumentation automation

[lrafeei]

This PR adds a new LangChain Vectorstore instrumentation populator to the scripts directory as well as some tweaks to the existing instrumentation.

[github-actions]

🦙 MegaLinter status: ✅ SUCCESS

Descriptor	Linter	Files	Fixed	Errors	Elapsed time
✅ PYTHON	bandit	2		0	5.64s
✅ PYTHON	black	4	0	0	2.22s
✅ PYTHON	flake8	4		0	1.3s
✅ PYTHON	isort	4	0	0	0.23s
✅ PYTHON	pylint	4		0	7.32s

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[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 81.27%. Comparing base (82918c5) to head (51c8646).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1279   +/-   ##
=======================================
  Coverage   81.26%   81.27%           
=======================================
  Files         202      202           
  Lines       22233    22232    -1     
  Branches     3527     3527           
=======================================
+ Hits        18067    18068    +1     
+ Misses       2995     2993    -2     
  Partials     1171     1171           

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