Configurable dump transaction

[evgeniy-r]

✓ Checklist:

• This PR has been added to CHANGELOG.md (at the top of the list);
• Tests for the changes have been added (for bug fixes / features);
• Docs have been added / updated (for bug fixes / features).

[codecov-commenter]

Codecov Report

Merging #96 (4c8f6ea) into main (8477299) will decrease coverage by 0.39%.
The diff coverage is 51.56%.

@@            Coverage Diff             @@
##             main      #96      +/-   ##
==========================================
- Coverage   78.83%   78.43%   -0.40%     
==========================================
  Files          49       50       +1     
  Lines        2939     2996      +57     
==========================================
+ Hits         2317     2350      +33     
- Misses        622      646      +24     

Impacted Files	Coverage Δ
datanymizer_dumper/src/postgres/dumper.rs	22.22% <0.00%> (ø)
datanymizer_dumper/src/postgres/query_wrapper.rs	0.00% <0.00%> (ø)
cli/pg_datanymizer/src/app.rs	67.00% <88.46%> (+7.54%)	⬆️
cli/pg_datanymizer/src/options.rs	93.10% <100.00%> (+0.65%)	⬆️

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