### Is there an existing issue for this?

- [X] I have searched the existing issues

### Feature description

Provide an URL where I can delete stored SES emails.
My motivation is to write integration tests much easier, if I could delete the stored emails from the localstack before each test case. 

I use the docker image to run localstack. Mount the `/var/lib/localstack` folder to the host and delete the files from the `tmp/state/ses` is cumbersome because of the file permission issue of docker.

I think the simplest way to achieve the empty SES emails state is to implement a new endpoint in a same way as to the GET /_localstack/ses has been implemented:

**path:** /_localstack/ses
**method:** DELETE

### 🧑‍💻 Implementation

I am not a python developer, but I think one solution is to extend the [SesServiceApiResource](https://github.com/localstack/localstack/blob/590de96b3dd65e349709300b668e70f1f9664e99/localstack/services/ses/provider.py#L121) with an `on_delete` method.

Open question for me is either delete the `/var/lib/localstack/tmp/state/ses` folder or just delete the files of the `ses` folder.
The folder does not exist when the container starts. It is created when the first email received and saved by the service.
I think both solutions have the same performance impact, so the real question is what is preferred by the maintainers.

As I mentioned I am not familiar with python ecosystem but I am happy to help implementing the feature if you accept the request.

### Anything else?

_No response_
backend = get_ses_backend(context)
        emitter = SNSEmitter(context)
        recipients = recipients_from_destination(destination)
        for event_destination in backend.config_set_event_destination.values():
            if not event_destination["Enabled"]:
                continue
            sns_destination_arn = event_destination.get("SNSDestination")
            if not sns_destination_arn:
                continue
            payload = SNSPayload(
                message_id=response["MessageId"],
                sender_email=source,
                destination_addresses=recipients,
                tags=tags,
            )
            emitter.emit_send_event(payload, sns_destination_arn, emit_source_arn=False)
            emitter.emit_delivery_event(payload, sns_destination_arn)
        save_for_retrospection(
            SentEmail(
                Id=response["MessageId"],
                Region=context.region,
                Source=source,
                Template=template,
                TemplateData=template_data,
                Destination=destination,
            )
        )
        return response
    @handler("SendRawEmail")
    def send_raw_email(