Use Case 2: pass a specific instance type with region / AZ with and return a true/false if not available

Pass a specific instance type with region / AZ with and return a true/false if not available

`
list-instance-types --region {region} 
  --az {az} --type {instance type} | --family {instance family}] |--latest] 
  [--output {output format}]
`

Returns a true | false