Vector similiary search support

[chayim]

Pull Request check-list

Please make sure to review and check all of these items:

• Does $ tox pass with this change (including linting)?
• Do the CI tests pass with this change (enable it first in your forked repo and wait for the github action build to finish)?
• Is the new or changed code fully tested?
• Is a documentation update included (if this change modifies existing APIs, or introduces new ones)?
• Is there an example added to the examples folder (if applicable)?

NOTE: these things are not required to open a PR and can be done
afterwards / while the PR is open.

Description of change

Please provide a description of the change here.

[codecov-commenter]

Codecov Report

Merging #1986 (427187f) into master (857d839) will increase coverage by 0.01%.
The diff coverage is 98.36%.

@@            Coverage Diff             @@
##           master    #1986      +/-   ##
==========================================
+ Coverage   93.04%   93.06%   +0.01%     
==========================================
  Files          77       77              
  Lines       16603    16656      +53     
==========================================
+ Hits        15449    15501      +52     
- Misses       1154     1155       +1     

Impacted Files	Coverage Δ
redis/commands/search/commands.py	89.24% <95.23%> (+0.16%)	⬆️
tests/test_search.py	98.89% <100.00%> (-0.18%)	⬇️
tests/test_graph.py	89.88% <0.00%> (-0.04%)	⬇️
tests/test_cluster.py	98.42% <0.00%> (+0.12%)	⬆️

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