Fix the create_theme script

[jwkaltz]

Fixes #1562

Example usage (when running in local development setup):

.venv/bin/create_theme_tables --configuration pyramid_oereb.yml --theme ch.Nutzungsplanung --sql-file test.sql

Note that this will only work with SQL file as output, not as direct database statement writing. Otherwise, some code refactoring would be required and I think direct database statement writing is not a good idea anyway when using a script in this way.

[codecov]

Codecov Report

Attention: 4 lines in your changes are missing coverage. Please review.

Comparison is base (0e166c3) 80.59% compared to head (1a62ff8) 80.57%.
Report is 13 commits behind head on master.

Files	Patch %	Lines
...yramid_oereb/contrib/data_sources/create_tables.py	0.00%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1913      +/-   ##
==========================================
- Coverage   80.59%   80.57%   -0.02%     
==========================================
  Files         125      125              
  Lines        5266     5267       +1     
==========================================
  Hits         4244     4244              
- Misses       1022     1023       +1     

Flag	Coverage Δ
unittests	80.57% <0.00%> (-0.02%)	⬇️

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[michmuel]

Looks good, thanks. I have just one question.