* tests: refactor
refactor tests and consolidate common functionality in integrations.conftest
this enables writing tests more concisely.
demonstrated with postgres and mssql.
will migrate more
* format
* removed helpers
* changed scope of fictures
* changed scope of fixtures
* added profiler test for mssql
* fixed import in data_quality test
* json safe serialization
* format
* set MARS_Connection
* use SerializableTableData instead of TableData
* deleted file test_postgres.py
* fixed tests
* added more test cases
* format
* changed name test_models.py
* removed the logic for serializing table data
* wip
* changed mapping in common type map
* changed mapping in common type map
* reverted TableData imports
* reverted TableData imports
* reverted TableData imports
