Features
- added the main `CLI`
- added the `RASAC server GUI`
- added `quiet mode` to `RASAC server`
- `GUI` fully supports building RASA NLU pipelines
- supports training models by configuring pipeline and policy components using the `GUI`
- supports training the models without having to use `CLI` commands
- provide model management to view and manage all trained models using the `GUI`
- all trained models can be evaluated using the auto generated learning curves for `DIET classifiers`