Add EKS Security Rule: Public access to EKS cluster endpoint should be disabled

[varunjain99]

1. Follow the directions here to add the rule - https://docs.zeuscloud.io/contribute/add-security-rule

2. The Neo4J query probably should check the endpoint_public_access field of the EKSCluster node.

3. Create a cdk stack (https://github.com/Zeus-Labs/ZeusCloud/blob/main/cdk/bin/cdk.ts) with an EKS cluster that violates / doesn't violate this condition. Be sure to give no IAM permissions.

4. Run ZeusCloud and check that the rule works correctly. You can speed up cartography running by commenting out intel modules that are run here: (https://github.com/Zeus-Labs/cartography/blob/master/cartography/intel/aws/resources.py)