Create a terraform implementation and deployable architecture for the solution tutorial

[powellquiring]

• an optional prefix. If set, it is used. If empty a default random prefix is generated like in https://github.com/l2fprod/simple-da/blob/7c35363613ca7fb2c9440bf2a7160ece5b284465/main.tf#L30
• an optional use_default_resource_group set to true, that will create the resources in the resource group marked as default https://registry.terraform.io/providers/IBM-Cloud/ibm/latest/docs/data-sources/resource_group#is_default. If false, a resource group is created using the local.basename (derived from prefix)
• an optional region