Introduce new component 'helm'

[sbose78]

/kind user-story
/kind epic

Which area this user story is related to?

/area api
/area library
/area integration-tests
/area test-automation

User Story

As a stack/devfile author, I wish to provide deployment guidance in the form of a Helm Chart

---
components:
  - id: deploy-node-app
    helm:
      chart: http://helm-chart-url
      values: 
        image: quay.io/sample/hello-world # A chart may expose a well-known values.yaml parameter called "image".
        replicas: 3

If the helm component is associated with a dockerfile component (image build guidance) in a composite command, #51 , che/odo must associate the built image from the 'build' guidance using the image parameter in the chart's values.yaml .

- composite:
      id: build-and-deploy
      label: Build image and deploy nodejs app
      commands:
      - build-node-app
      - deploy-node-app
      parallel: false
      group: 
          kind: deploy

Acceptance Criteria

• Introduce new component 'helm' to Devfile API
• Introduce new component 'helm' to Devfile Parser
• Introduce calls related to new component 'helm' in Devfile Library
• Validation for new component 'helm'
• Guide for using component 'helm'

refined by: @michael-valdron

[michael-valdron]

/kind user-story

/area api
/area library
/area integration-tests
/area test-automation

[michael-valdron]

/kind epic

[github-actions]

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