### 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_
"""JSON serializer for timestamps."""
        if isinstance(obj, (datetime, date, time)):
            return obj.isoformat()
        return obj.__dict__
    with open(path, "w") as f:
        f.write(json.dumps(sent_email, default=_serialize))
    LOGGER.debug("Email saved at: %s", path)
def recipients_from_destination(destination: Destination) -> List[str]:
    """Get list of recipient email addresses from a Destination object."""
    return (
        destination.get("ToAddresses", [])
        + destination.get("CcAddresses", [])
        + destination.get("BccAddresses", [])
    )
def get_ses_backend(context: RequestContext) -> SESBackend:
    return ses_backends[context.account_id][context.region]
class SesServiceApiResource:
    """Provides a REST API for retrospective access to emails sent via SES.
    This is registered as a LocalStack internal HTTP resource.
    This endpoint accepts:
    - GET param `email`: filter for `source` field in SES message
    """
    def on_get(self, request):