Implement Resource panel UI

[mowies]

Description

Implement a new tab in the ArgoCD app resource panel that shows details about the app's tasks/evaluations and their results. Come up with a good UX for showing this information.

Details

The keptn-gateway should have one endpoint to gather and return the needed information.

Request params:

• KeptnAppVersion name, namespace

Returned data:

• pre/post tasks/evaluations from app together with the respective results
• list of KeptnWorkloads with pre/post tasks/evaluations together with the respective results

Notes

Docs for extending adding a new resource tab

[shardulsrivastava]

@mowies I am not sure about the complexity , but I would like to take a stab at this. I am a newbie, but happy to take on a challenge.

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