Refactoring SLSim - Refactor Lens class

[jacob-hjortlund]

Current Status

Lens currently has multiple responsibilities, including constructing transient point sources using provided kwargs and strings, leading to shared responsibilities with other components.

Proposed Solution

Use the dependency injection design pattern and refactor Lens to take two Galaxy objects as inputs (see #227 ), representing the deflector and source galaxy. The source Galaxy object has full responsibility for providing any related point sources. The Lens class's responsibility is to handle any strong lensing interaction between the provided Galaxy objects.

To-Do List

• TBD