[DOP-8665] - Allow modes "ignore" and "error" in JDBC.WriteOptions

[maxim-lixakov]

Change Summary

• add ignore and error modes (if_exists=...) to JDBC.WriteOptions
• add unit and integration tests
• updated documentation

Related issue number

Checklist

• Commit message and PR title is comprehensive
• Keep the change as small as possible
• Unit and integration tests for the changes exist
• Tests pass on CI and coverage does not decrease
• Documentation reflects the changes where applicable
• docs/changelog/next_release/<pull request or issue id>.<change type>.rst file added describing change
  (see CONTRIBUTING.rst for details.)
• My PR is ready to review.

[codecov]

Codecov Report

Merging #144 (e0b4242) into develop (5d4b4b1) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff            @@
##           develop     #144   +/-   ##
========================================
  Coverage    94.27%   94.27%           
========================================
  Files          207      207           
  Lines         7701     7703    +2     
  Branches      1449     1449           
========================================
+ Hits          7260     7262    +2     
  Misses         321      321           
  Partials       120      120           

Files Changed	Coverage Δ
...ection/db_connection/jdbc_connection/connection.py	100.00% <100.00%> (ø)
...onnection/db_connection/jdbc_connection/options.py	100.00% <100.00%> (ø)

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