End-of-run summary report

[Qalthos]

Partially addresses #4004

This should probably be hidden behind a flag if this gets merged as is

current output:

$ molecule test --all
INFO     Performing prerun with role_name_check=0...
[...]
INFO     Pruning extra files from scenario ephemeral directory
- name: default
  results:
  - state: PASSED
    subcommand: prepare
- name: integration_failure
  results:
  - state: PASSED
    subcommand: converge
- name: integration_key_checking
  results:
  - state: PASSED
    subcommand: converge
- name: integration_success
  results:
  - state: PASSED
    subcommand: prepare
  - state: FAILED
    subcommand: converge
  - state: PASSED
    subcommand: cleanup
  - state: PASSED
    subcommand: destroy