feat(ec2): add interface VPC endpoint for DSQL (#34487)

### Issue # (if applicable)

None

### Reason for this change

AWS supports interface VPC endpoint for DSQL but AWS CDK does not sopport this.

### Description of changes

Add interface VPC endpoints
- `DSQL`
- `DSQL_FNH4`

### Describe any new or updated permissions being added

None

### Description of how you validated changes

```sh
$ aws ec2 describe-vpc-endpoint-services --filters "Name=service-name,Values=*dsql*" --region us-east-1 --query "ServiceNames[]" 
[
    "com.amazonaws.us-east-1.dsql",
    "com.amazonaws.us-east-1.dsql-fnh4"
]
```

### Checklist
- [x] My code adheres to the [CONTRIBUTING GUIDE](https://github.com/aws/aws-cdk/blob/main/CONTRIBUTING.md) and [DESIGN GUIDELINES](https://github.com/aws/aws-cdk/blob/main/docs/DESIGN_GUIDELINES.md)

----

*By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license*

Author: badmintoncryer

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

@@ -478,6 +478,12 @@ export class InterfaceVpcEndpointAwsService implements IInterfaceVpcEndpointServ
   public static readonly DEVOPS_GURU = new InterfaceVpcEndpointAwsService('devops-guru');
   public static readonly DIRECTORY_SERVICE = new InterfaceVpcEndpointAwsService('ds');
   public static readonly DIRECTORY_SERVICE_DATA = new InterfaceVpcEndpointAwsService('ds-data');
+  /**
+    The management endpoint for DSQL.
+    For the Connection endpoint, use `new InterfaceVpcEndpointService(cfnCluster.attrVpcEndpointServiceName)`.
+    See https://docs.aws.amazon.com/aurora-dsql/latest/userguide/privatelink-managing-clusters.html#endpoint-types-dsql for details
+   */
+  public static readonly DSQL_MANAGEMENT = new InterfaceVpcEndpointAwsService('dsql');
   public static readonly DYNAMODB = new InterfaceVpcEndpointAwsService('dynamodb');
   public static readonly DYNAMODB_FIPS = new InterfaceVpcEndpointAwsService('dynamodb-fips');
   public static readonly DYNAMODB_STREAMS = new InterfaceVpcEndpointAwsService('dynamodb-streams');