Implement support for RASA NLU Engine

[ralphg6]

This issue is a child of #10

[arthurTemporim]

@ralphg6 the objective of this issue is to import each Rasa NLU component?
Without the need of building a David component with rasa behavior?

[arthurTemporim]

Maybe the issue #39 (RASA adapter) is needed to be done before this one 🤔

[ralphg6]

@arthurTemporim I think we can to build a Rasa NLU component to proxy Rasa Components.

For example, the config can will be:

pipeline:
  - name: nlu_rasa
    config:
      language: en
      pipeline:
          - name: "SpacyNLP"
          - name: "SpacyTokenizer"
          - name: "SpacyFeaturizer"
          - name: "RegexFeaturizer"
          - name: "EntitySynonymMapper"
          - name: "SklearnIntentClassifier"

[ralphg6]

Maybe the issue #39 (RASA adapter) is needed to be done before this one thinking

Yes! And #15 too.