Implement Keptn Health heart icon

[mowies]

Description

ArgoCD already has a general health icon, but we want to introduce our own with deeper checks.

Details

The health check should include checks for successful deployment. that results in checking the keptnappversion status of the latest KAV.

The possible states are:

• healthy
• unhealthy
• warning
• progressing

This UI feature should use a single keptn-gateway endpoint which returns the health status and abstracts away the business logic in the backend.

Request params:

• keptnapp name
• namespace

Response:

• status of the latest keptnappversion of the provided keptnapp

Notes

The health icon should be visible in the App status panel: https://argo-cd.readthedocs.io/en/stable/developer-guide/extensions/ui-extensions/#application-status-panel-extensions

[github-actions]

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