Factory Pattern to Handle Connections

We would like to enhance the code to handle the on Connection, to move toward a factory pattern and have a more polymorphic approach. File plugin.cs

Start by reading plugin.cs to understand how connections are currently handled and identify the connection-related responsibilities. The issue does not name tests or a more specific entry point; done means replacing the current approach with a factory-based, polymorphic connection design, with behavior validated against the existing plugin functionality.

Written by the indexing model from the issue text.