Write a Design Doc for new Wrangler PDS module to support pods

[windley]

Write a design document for the necessary changes to Wrangler within the following parameters:

1. State the goal. Describe the problem.
2. List your assumptions
3. Design and describe how the pod will be identified and how the pico will be authenticated
4. Design and describe the functions needed to query the pod and the pod server
5. Design and describe the actions needed to make changes to the pod server.
6. Describe what isn't included and why (e.g., any unsupported user stories)

Design document should be fewer than 5 pages (not counting appendices)

[KyerHarris]

https://docs.google.com/document/d/19kPGb1Xl9VAbuC3L3QFQAqcsTZ8dX2AcFW4OThjfags/edit?usp=sharing