Fix csv export/import

Merge Request

Breaking Changes

CSV exports no longer use double quotes around all values, but only when necessary

Description

• CSV imports are aware of the data type of a value
• Add CSV Integration Tests
• CSV exports no longer use double quotes around all values, but only when necessary

Checklist

• The code compiles without any warnings.
• I followed the code review checklist.
• The documentation has been added/updated.
• There are no System.out.println() statements.

Related Issues

• Related #
• Closes #117 (closed)