Add command for EC2 console screenshot retrieval

Added command to retrieve a JPG-format screenshot of a running instance.

Author: Marmeus

src/pentesting-cloud/aws-security/aws-services/aws-ec2-ebs-elb-ssm-vpc-and-vpn-enum/README.md

@@ -82,6 +82,9 @@ aws ec2 describe-addresses
 # Get current output
 aws ec2 get-console-output --instance-id [id]
 
+# Get a JPG-format screenshot of a running instance
+aws ec2 get-console-screenshot --instance [id]
+
 # Get VPN customer gateways
 aws ec2 describe-customer-gateways
 aws ec2 describe-vpn-gateways