Ability to create Windows Custom AMI for Elastic Beanstalk

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**Tell us about your request**
What do you want us to build?
Ability to use the windows AMI provided by AWS today for Beanstalk windows 2016 or 2019.

**Tell us about the problem you're trying to solve. What are you trying to do, and why is it hard?**
What outcome are you trying to achieve, ultimately, and why is it hard/impossible to do right now? What is the impact of not having this problem solved? The more details you can provide, the better we'll be able to understand and solve the problem.

Have to create an image from already existing Beanstalk AMI and use that AMI to build the Custom AMI. Here are the steps

**Are you currently working around this issue?**
How are you currently solving this problem?

create a custom AMI in Elastic BeanStalk
use that AMI as a BaseAMI/Source AMI in EC2 Image Builder.
To use custom AMI ID in EC2 Image builder, the AWS Systems Manager Agent (SSM Agent) needs to be pre-installed in the selected AMI
Here is the doco that shows how to create Custom EB image

https://docs.aws.amazon.com/elasticbeanstalk/latest/dg/using-features.customenv.html

The above document will show you how to get the ami-id. You can use ami ids in EC2 Image builder.

**Additional context**
Anything else we should know?

**Attachments**
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Start with the linked Elastic Beanstalk custom-environment documentation and trace the described flow from a Beanstalk Windows 2016 or 2019 AMI through EC2 Image Builder. Define completion as supporting those AWS-provided Windows AMIs as custom image sources while accounting for the stated SSM Agent prerequisite.

Written by the indexing model from the issue text.