[ZDWB-52] Added key SQL Server plugins - CreateDatabaseMigration, DatabaseExistsAssertion, DatabaseDoesNotExistAssertion with unit tests, and also added initial CLI integration test. Fixed some failing tests, and cleaned up suites.
[ZDWB-58] Ported the MySql TableExists and TableDoesNotExist assertions to SQL versions, along with their unit tests.
Merging