Feature Request: Support --external-checks-XXX

[libertyy]

Feature Request:

action.yml to support --external-checks-dir and --external-checks-git

[mikelax]

I believe that this is currently supported if you configure the external checks in a checkov config file and the config file is used by the GitHub action.

example snippet of .checkov.yml file

external-checks-dir:
  - ./checkov_external_checks

[gruebel]

it can be used via

  external_checks_dirs:
    description: 'comma separated list of external (custom) checks directories'
    required: false
  external_checks_repos:
    description: 'comma separated list of external (custom) checks repositories'
    required: false