[enhancement] - add DEvSecOps to QHub CI

[trallard]

Description

We want to ensure that the QHub deployments are secure and that we can identify any potential vulnerabilities ASAP.

Suggestion

• Use a tool like kubescape within the CI
• Add documentation for folks deploying their own QHub instances on how to use / add kubescape

Context

DevSecOps benefits everyone - from the team developing QHub to the end-users and folks deploying QHub for their own use

[viniciusdc]

c.c @magsol