Create UI with tcell #240
Description
Tracking branch: https://github.com/vapor-ware/synse-cli/tree/tcell
- Track synse-cli config changes with https://github.com/fsnotify/fsnotify and update UI accordingly
- Create views for list of devices and readings
- Use better abstractions to continuously stream new data without redrawing components
- Add mechanism for additional key bindings
- Create interface for sending a synse plugin action
- Ability to pause and resume polling