Document Timeout [gitlab]

[jmwample]

Add wiki page describing life-cycle of a Conjure session. This will be useful as we:

1. develop a strategy to deploy at new stations and share registrations and sessions between them.
2. add features to the client including registration re-use.

• [ ] Describe session tracking strategy
• [ ] Describe session tracking timeouts (registration in App and Detector)
• [ ] Session creation tracking (and registration reuse?) on the client

original submission: 12/18/2019