[Enhancement]: Python - EC2 - Add public IP4 lookup example

[ford-at-aws]

Background story

The issue was submitted by a customer who wanted to:

"get the data about the public ipaddress (ipv4) that are associated in a resources."
and
"get a central information on all the resource that uses ipv4"

What does this example accomplish?

The example will list the public IP addresses of all EC2 instances in your AWS account.

Which AWS service(s)?

EC2

Which AWS SDKs or tools?

• Python

Are there existing code examples to leverage?

Yes, we have 1 existing example in Python: python/example_code/ec2/elastic_ip.py

Do you have any reference code?

No response