Trigger a run with Slack command

[sidPhoenix17]

Is your feature request related to a problem?

No.

Please describe.

If a user wants to trigger a PlayBook manually, we should give them an option to be able to do that.

Describe the solution you'd like

I'd like to just do /droid playbook-name var-1 var-2 if i want to trigger run of "playbook-name" with $variable1 value as var-1, $variable2 value as var-2

Describe alternatives you've considered

Triggering it from API

Additional context

Add any other context or screenshots about the feature request here.

Thank you for your feature request!