feat: Qdrant support for the VectorDB interface

[Anush008]

Description

Adds a Qdrant - https://qdrant.tech/ based implementation for the VectorDB interface.

Checks

• I've written tests to cover the implemented code.

[thinkall]

Thank you very much for the PR, @Anush008 !

Would you like to update the notebook example as well?

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 104 lines in your changes missing coverage. Please review.

Project coverage is 23.18%. Comparing base (6279247) to head (8e78d2f).
Report is 17 commits behind head on main.

Files	Patch %	Lines
autogen/agentchat/contrib/vectordb/qdrant.py	0.00%	99 Missing and 2 partials ⚠️
autogen/agentchat/contrib/vectordb/base.py	0.00%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3035      +/-   ##
==========================================
- Coverage   32.90%   23.18%   -9.72%     
==========================================
  Files          94       96       +2     
  Lines       10235    10531     +296     
  Branches     2193     2415     +222     
==========================================
- Hits         3368     2442     -926     
- Misses       6580     7830    +1250     
+ Partials      287      259      -28     

Flag	Coverage Δ
unittest	12.15% <0.00%> (?)
unittests	22.41% <0.00%> (-10.49%)	⬇️

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GitGuardian id	GitGuardian status	Secret	Commit	Filename
12853598	Triggered	Generic High Entropy Secret	8e78d2f	test/oai/test_utils.py	View secret
10404693	Triggered	Generic High Entropy Secret	8e78d2f	test/oai/test_utils.py	View secret
12853599	Triggered	Generic High Entropy Secret	8e78d2f	test/oai/test_utils.py	View secret
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10404696	Triggered	Generic High Entropy Secret	8e78d2f	test/oai/test_utils.py	View secret
10422482	Triggered	Generic High Entropy Secret	8e78d2f	test/oai/test_utils.py	View secret
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[thinkall]

Hi @Anush008 , when I tried to use it in a notebook, I saw more issues: get_docs_by_ids is not working as expected as well. Could you address the issues and see it work in a notebook? Thanks.