170 - Respect response_type when Deserializing response

[da1910]

Closes #170

This PR treats response data as a string if it's specified as str, even if it looks like json.

Sometimes APIs will return stringified json, currently this will throw when we attempt to deserialize it, since we will end up expecting a string but we will receive a dictionary. This PR makes response_type override the existing logic, so that this use case is supported.

[codecov]

Codecov Report

Merging #180 (431f2f6) into main (5bdaf8f) will decrease coverage by 0.00%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #180      +/-   ##
==========================================
- Coverage   91.88%   91.87%   -0.01%     
==========================================
  Files           8        8              
  Lines         826      825       -1     
==========================================
- Hits          759      758       -1     
  Misses         67       67              

Impacted Files	Coverage Δ
src/ansys/openapi/common/_api_client.py	97.92% <100.00%> (-0.01%)	⬇️

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[Andy-Grigg]

These changes look good, and the new functionality is covered by a unit test. Not sure why coverage is showing a warning here.