Include the license-check and vulnerability-check options in the config
documentation in the README.
Also fix a typo in the README ("configuraton" -> "configuration").
Omit details related to the license check of vulnerability check from
the GitHub Actions Summary's summary if the respective check is disabled
from the configuration.
Add support for two new inputs, named `license-check` and
`vulnerability-check`, to disable the license checks or vulnerability
checks performed by this action. By default, both are enabled.
Eric Cornelissen