Add hints if authentication fails

[yevgenypats]

Use Case

If authentication fails apart from the aws built-in error it will be nice to have some hints, for example print if cloudquery detected AWS_ACCESS_KEY_ID or AWS_SECRET_ACCESS_KEY or AWS_PROFILE.

Additional context

This is especially useful for debugging when you set-up cloudquery in GitHub action and you are trying to understand if it's an issue with the action configuration or with cloudquery configuration.