Add support for o4-mini and o3

[rorymalcolm]

Describe the change

• This adds supports, and tests, for the o3 and o4-mini class of models

Provide OpenAI documentation link
https://platform.openai.com/docs/models/o4-mini
https://platform.openai.com/docs/models/o3

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 85.42%. Comparing base (774fc9d) to head (1941aa8).
Report is 94 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff             @@
##           master     #968       +/-   ##
===========================================
- Coverage   98.46%   85.42%   -13.04%     
===========================================
  Files          24       43       +19     
  Lines        1364     2264      +900     
===========================================
+ Hits         1343     1934      +591     
- Misses         15      308      +293     
- Partials        6       22       +16     

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[sashabaranov]

Thank you!