Task 5: VPC
* In Mumbai, create a VPC with CIDR 10.0.0.0/24
* Divide this VPC into 6 subnets across 2 AZ (e.g. a, b)
* Make 2 subnets as Public (namely 1-a, 1-b)
* Make 2 subnets as Private with outbound internet (namely 2-a, 2-b)
* Make 2 subnets as Private with no outbound internet (namely 3-a, 3-b)