feat: add ability to specify which Kubernetes workload resources to scan

[tks98]

Description

This PR adds the "targetWorkloads" config field which lets users specify the Kubernetes workload resources they want to scan using the vulnerability-report and config-audit report scanners. By default, all workload resource types are scanned.

PR adds logic to do this, adds a test case for the config, updates the usage documentation, updates the helm chart and static manifests.

I had a use-case similar to the related issue and made these modifications for personal use. I saw the related issue today and wanted to open this PR in case it could also benefit the wider community.

Please let me know if anything else is required, or needs to be changed. Thanks!

Related issues

• Close #265

Checklist

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

[CLAassistant]

All committers have signed the CLA.

[chen-keinan]

@tks98 Look's good 🚀 thank you for the contribution , I have added couple of comments