Oozie + Datastage + misc improvements

[fritz-astronomer]

• [datastage] fix/feat/doc: rm defusedXML dependency, add tests+docs, add more JQ
• [oozie] feat: update demo translation
• [oozie] fix: add airflow as o2a dep :(
• [datastage] fix: return sql as list, if multiple
• [datastage] fix: improve sql extraction
• [various] chore: standardize 'demo' msg, add/improve unit tests

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 88.01498% with 32 lines in your changes missing coverage. Please review.

Project coverage is 90.04%. Comparing base (6092f76) to head (cad1497).
Report is 29 commits behind head on main.

Files with missing lines	Patch %	Lines
orbiter_translations/oozie/xml_demo.py	90.90%	16 Missing ⚠️
orbiter_translations/oozie/__init__.py	80.88%	13 Missing ⚠️
orbiter_translations/data_stage/xml_demo.py	86.36%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #27      +/-   ##
==========================================
- Coverage   90.95%   90.04%   -0.91%     
==========================================
  Files          13       25      +12     
  Lines         431     1035     +604     
==========================================
+ Hits          392      932     +540     
- Misses         39      103      +64     

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