feat: Add grype as vulnerability scanner plugin

[HelenaSeidel]

Description

add grype as vulnerability scanning plugin

Related discussion

• #1146

Checklist

• [x] I've read the guidelines for contributing to this repository.
• [x] I've added tests that prove my fix is effective or that my feature works.
• [x] I've updated the documentation with the relevant information (if needed).
• [x] I've added usage information (if the PR introduces new options) -> in docs and helm values file
• [ ] I've included a "before" and "after" example to the description (if the PR is a user interface change).

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1 out of 2 committers have signed the CLA.

:white_check_mark: HelenaSeidel
:x: Kevin Seidel

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[HelenaSeidel]

further testing revealed that there is an with parsing the grype vulnerability report: seidkevi/starboard#1