add new object dataTypes and write tests for them

[tsmith023]

This PR adds the object and object[] data types to the allowed types when users define their schema. It then also provides a number of tests to ensure that the functionality from the client is as expected using these new data types.

@antas-marcin, please let me know if I'm missing any specific implementation with these data types that are not covered by the tests!

[codecov-commenter]

Codecov Report

Attention: 104 lines in your changes are missing coverage. Please review.

Comparison is base (7528726) 94.75% compared to head (a69fa6c) 94.03%.
Report is 24 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #570      +/-   ##
==========================================
- Coverage   94.75%   94.03%   -0.73%     
==========================================
  Files          70       73       +3     
  Lines        8492     8663     +171     
==========================================
+ Hits         8047     8146      +99     
- Misses        445      517      +72     

Files	Coverage Δ
integration/test_batch.py	98.54% <100.00%> (+0.10%)	⬆️
integration/test_cluster.py	100.00% <100.00%> (ø)
integration/test_crud.py	100.00% <100.00%> (ø)
integration/test_graphql.py	94.44% <100.00%> (+0.29%)	⬆️
integration/test_schema.py	97.54% <100.00%> (+0.17%)	⬆️
test/test_client.py	100.00% <100.00%> (ø)
test/test_embedded.py	97.77% <100.00%> (+0.21%)	⬆️
weaviate/client.py	98.66% <100.00%> (ø)
weaviate/connect/authentication.py	96.15% <100.00%> (ø)
weaviate/embedded.py	92.30% <100.00%> (+0.25%)	⬆️
... and 9 more

... and 1 file with indirect coverage changes

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