v2/PyQt Infrastructure

Here's a tracking issue for the non-editor work we'll need in V2.

• Project layout (including Conda setup)
• FS management
• Network management
• beat.cmdline integration (including layout stuff)
• beat.core integration (including Docker stuff)
• PyQt app framework
  • Running example
  • Navigation
  • State management backend (see notes below)
• Testing setup including example
• Documentation setup if different than v1
• CI integration

State management is all about providing a idiomatic interface to the various resources we work with (the prefix, APIs, docker images, graphviz, network, etc.):

• Lets the user undo/redo things
• Lets the app index & transform BEAT objects quickly
• Easy MapReduce-like operations on data
• Querying docker containers
• Querying Graphviz
• Lets us mock the resources easily for testing