Fixed an issue where the UI can block when certain key combinations are
pressed in different states. An alternative and more robust approach would
likely be to re-write the runner code as a finite state machine, however
these quick fixes work okay.
Additionally cleaned up some spacing in console messages and added a CREATED
state which is the default state of a pomodoro.
This change allows for E2E blackbox testing of pomodoro commands
by adding a New(*pomo.Config) *Cli.cmd function to the cmd module.
In a subsequent PR we should refactor pomo.Config into a public
module.