Include delim/quote chars in COPY config

Problem

Handling complex records with lots of newlines (of various flavors) in individual fields + probably improving import performance as a side-effect

Do the very obvious thing and include the quote/delim characters in the config of the COPY statement passed to DuckDB.

[ ] Bugfix (non-breaking change which fixes an issue)
[X] New feature (non-breaking change which adds functionality)
[ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
[ ] Documentation Update (if none of the other choices apply)

[ ] Description above provides context of the change
[ ] I have added tests that prove my fix is effective or that my feature works
[ ] Unit tests for changes (not needed for documentation changes)
[ ] CI checks pass with my changes
[ ] Bumping version in setup.py is an individual PR and not mixed with feature or bugfix PRs
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[ ] Branch name starts with AP-NNN (if applicable. AP-NNN = JIRA ID)
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[ ] Relevant documentation is updated including usage instructions