(ec2): create event ec2 snapshot target for cdk

### Description

I need create target ec2 snapshot for cdk, like this:
https://docs.aws.amazon.com/pt_br/AmazonCloudWatch/latest/events/TakeScheduledSnapshot.html

### Use Case

Because I have Infra as code that was implemented by cdk

### Proposed Solution

Implementing this task that allows us to create this via CDK

https://docs.aws.amazon.com/cdk/api/v1/dotnet/api/Amazon.CDK.AWS.Events.Targets.html

### Other information

_No response_

### Acknowledge

- [ ] I may be able to implement this feature request
- [ ] This feature might incur a breaking change

Start with the linked Amazon CloudWatch scheduled snapshot documentation and the AWS CDK v1 Events Targets API reference. No repository file or test is identified in the issue, so locate the existing EC2 and CloudWatch Events target entry points first. Done means CDK can define an EC2 snapshot target matching the documented use case, with coverage for the new behavior.

Written by the indexing model from the issue text.