[2.0] Abstract ephys session to allow other kinds of rigs (other than the MIS dome)

[dbirman]

Is your feature request related to a problem? Please describe.
Current ecephys session is specific to the dome module. Abstract it and move the dome module into some kind of extension?

Describe the solution you'd like

• ecephys session is no longer specific to the AIND dome module
• Upgrader from v1.x to 2.0

Additional context
https://alleninstitute.sharepoint.com/:w:/r/sites/NeuralDynamics/_layouts/15/Doc.aspx?sourcedoc=%7BE27B889D-27A1-4CC0-948C-10ADBE605654%7D&file=Data+Schema+2.0.docx&action=default&mobileredirect=true&DefaultItemOpen=1