Added overall cancel command

[cdhiraj40]

Description:

Overall cancel command will stop ongoing voice commands and let the user start another workflow if asked.

Why Needed:

Unhappy workflow

User: Select a car (Backend: Start car selection form and keep checking pre-requisites and if fulfilled select a car)
Bot: which one do you want to select? 1? 2? 3? (This is a custom message, just added here to decrease complexity)
User: Start Recording
Bot: Wrong request
User: Please start recording
Bot: Wrong request

User experience: 😞

Bot persists to have memory for a long time which makes it hard for the user to start another workflow. While this can be easily handled by adding an edge story to handle the start recording while car selection is happening. But it becomes hard to maintain this for every other command.

Happy workflow

User: Select a car (Backend: Start car selection form and keep checking pre-requisites and if fulfilled select a car)
Bot: which one do you want to select? 1? 2? 3? (This is a custom message, just added here to decrease complexity)
User: Cancel car selection
Bot: Okay, canceling running commands!
User: Please start recording
Bot: (start recording action starts)

User experience: 😄

Action points:

• Added training data
• Added stories
• Added rules
• Cancel command custom action
• Tested

Screen recording:

I will add it soon!

[cdhiraj40]

Closing and reopening the pull request to trigger the action.

[github-actions]

Commit: b233438
Data: default

Configuration	Intent Classification Micro F1	Entity Recognition Micro F1	Response Selection Micro F1	Story Recognition Micro F1
config.yml	1.0000 (0.00)	0.9643 (0.00)	no data	1.0000 (0.00)