chore(ec2): add email-smtp interface endpoint (#22558)

Added interface VPC endpoint for SES to InterfaceVpcEndpointAwsService to make it easier to implement ones

SES VPC endpoint: https://docs.aws.amazon.com/ses/latest/dg/send-email-set-up-vpc-endpoints.html

----

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### Adding new Unconventional Dependencies:

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### New Features

* [ ] Have you added the new feature to an [integration test](https://github.com/aws/aws-cdk/blob/main/INTEGRATION_TESTS.md)?
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*By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license*

Author: clueleaf

packages/@aws-cdk/aws-ec2/lib/vpc-endpoint.ts

@@ -401,6 +401,7 @@ export class InterfaceVpcEndpointAwsService implements IInterfaceVpcEndpointServ
   public static readonly WORKSPACES = new InterfaceVpcEndpointAwsService('workspaces');
   public static readonly XRAY = new InterfaceVpcEndpointAwsService('xray');
   public static readonly SECURITYHUB = new InterfaceVpcEndpointAwsService('securityhub');
+  public static readonly EMAIL_SMTP = new InterfaceVpcEndpointAwsService('email-smtp');
 
   /**
    * The name of the service. e.g. com.amazonaws.us-east-1.ecs

packages/@aws-cdk/aws-ec2/package.json

@@ -324,6 +324,7 @@
       "docs-public-apis:@aws-cdk/aws-ec2.InterfaceVpcEndpointAwsService.TRANSCRIBE",
       "docs-public-apis:@aws-cdk/aws-ec2.InterfaceVpcEndpointAwsService.XRAY",
       "docs-public-apis:@aws-cdk/aws-ec2.InterfaceVpcEndpointAwsService.SECURITYHUB",
+      "docs-public-apis:@aws-cdk/aws-ec2.InterfaceVpcEndpointAwsService.EMAIL_SMTP",
       "docs-public-apis:@aws-cdk/aws-ec2.Port.toString",
       "docs-public-apis:@aws-cdk/aws-ec2.PrivateSubnet.fromPrivateSubnetAttributes",
       "docs-public-apis:@aws-cdk/aws-ec2.PublicSubnet.fromPublicSubnetAttributes",