Code refactor and control filtered

[vyokky]

1. Refactor the automator module with command pattern to adapt for more actions type.
2. Refactor the flow.py --> processors/processor.py, with template pattern to break the long process into sub-process.
3. Break a session into round for mutiple conversation.
4. Refactor the main.py with state pattern for state transision.
5. Add control filters to filter irrelevant controls.