feat(python-client, airflow): support startup_timeout for pending state waiting

[hussein-awala]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 82.60870% with 4 lines in your changes missing coverage. Please review.

Project coverage is 62.22%. Comparing base (43fab67) to head (0c1755b).
Report is 1 commits behind head on main.

Files	Patch %	Lines
spark_on_k8s/airflow/operators.py	63.63%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #84      +/-   ##
==========================================
+ Coverage   59.49%   62.22%   +2.73%     
==========================================
  Files          31       31              
  Lines        1296     1313      +17     
==========================================
+ Hits          771      817      +46     
+ Misses        525      496      -29     

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