Use fsargs for helm scans, add debug, deprecate security checks and add scanners

[fishnix]

This PR fixes a few minor issues:

1. It looks like the plugin is doing a direct config scan if the helm overrides is passed, which means the scan will then fail when the fs scan runs. I don't think this is the desired behavior and the overrides flag should be passed to the fs scan.
2. Adds a debug option that was incredibly useful during the development of the above
3. Add support for "scanners" and deprecation notices for "security checks" per the trivy docs

[rkukura]

LGTM

[gradientsearch]

lgtm

thx @fishnix