feat: Support Karpenter nodes and nodepoolInfo grouping

[Kavinraja-G]

Fixes #23

❯ go build -o nodegizmo && ./nodegizmo nodepool
  NODEPOOL                            PROVIDER   REGION     ZONE        INSTANCE-TYPE  NODES
  default                             Karpenter  us-east-1  us-east-1a  t3a.small      ip-10-0-0-93.ec2.internal
                                                                                       ip-10-0-10-158.ec2.internal
                                                                                       ip-10-0-11-132.ec2.internal
                                                                        t3.small       ip-10-0-14-108.ec2.internal
                                                            us-east-1b  t3a.small      ip-10-0-19-158.ec2.internal
                                                                                       ip-10-0-22-210.ec2.internal
                                                                                       ip-10-0-24-21.ec2.internal
                                                                                       ip-10-0-30-193.ec2.internal
                                                                                       ip-10-0-31-180.ec2.internal
                                                            us-east-1c  t3a.medium     ip-10-0-32-151.ec2.internal
                                                                                       ip-10-0-32-179.ec2.internal
                                                                        t3a.small      ip-10-0-33-207.ec2.internal
                                                                                       ip-10-0-37-144.ec2.internal
                                                                                       ip-10-0-37-55.ec2.internal
                                                                                       ip-10-0-38-99.ec2.internal
                                                            us-east-1a                 ip-10-0-4-128.ec2.internal
                                                                                       ip-10-0-4-53.ec2.internal
                                                            us-east-1c                 ip-10-0-40-105.ec2.internal
                                                                                       ip-10-0-40-11.ec2.internal
                                                                                       ip-10-0-41-98.ec2.internal
                                                                                       ip-10-0-42-88.ec2.internal
                                                                        t3a.medium     ip-10-0-46-105.ec2.internal
  generic-2023102107344574640000001e  EKS                   us-east-1b  t3.medium      ip-10-0-23-172.ec2.internal
                                                            us-east-1c                 ip-10-0-33-54.ec2.internal
                                                            us-east-1a                 ip-10-0-7-138.ec2.internal