After we implemented ConnectionProvider in the dependent ticket (https://jira.mongodb.org/browse/HIBERNATE-27), we need to create the first jdbc flow pipeline component: java.sql.Connection, particularly:

• create its base or default implementation (throwing exceptions for all API methods)
• look up in Hibernate codebase to narrow down all the methods Hibernate really used
• create new class extending the base implementation and only override the methods Hibernate is using
• for methods out of the scope of m1, simply throw exception like `NotYetImplemented`
• update ConnectionProvider's connection creation methods to use the new connection implementation class
• transaction demarcation is out of scope of this sub-task ( the sub-task is https://jira.mongodb.org/browse/HIBERNATE-30)
• no unit testing is mandatory, but any verification approach is welcome