UA for Apps process docs

[Bryce Harrington]

Hi Josh,

Lucas and I have a draft completed for your review of a doc defining the
processes for handling UA for Apps projects, from effort estimation, to
package development, to review and upload for the security team.

There are a couple of ?'s sprinkled in for latter steps we're not clear
on.  As we progress to the finish line on Kafka we should update with
proper links/teamnames/etc.

https://docs.google.com/document/d/1SAC1qgrxLiD7qdYfip7qVFb7QZk5M7Ik0o7qVvJJV-o

Bryce