### 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_
data_dir = config.dirs.data or config.dirs.tmp
        email = f"user-{short_uid()}@example.com"
        ses_client.verify_email_address(EmailAddress=email)
        ses_client.delete_template(TemplateName=TEST_TEMPLATE_ATTRIBUTES["TemplateName"])
        create_template(Template=TEST_TEMPLATE_ATTRIBUTES)
        message = ses_client.send_templated_email(
            Source=email,
            Template=TEST_TEMPLATE_ATTRIBUTES["TemplateName"],
            TemplateData='{"A key": "A value"}',
            Destination={
                "ToAddresses": ["success@example.com"],
            },
        )
        message_id = message["MessageId"]
        with open(os.path.join(data_dir, "ses", message_id + ".json"), "r") as f:
            message = f.read()
        contents = json.loads(message)
        assert email == contents["Source"]
        assert TEST_TEMPLATE_ATTRIBUTES["TemplateName"] == contents["Template"]
        assert '{"A key": "A value"}' == contents["TemplateData"]
        assert ["success@example.com"] == contents["Destination"]["ToAddresses"]
        api_contents = requests.get("http://localhost:4566/_localstack/ses").json()
        api_contents = {msg["Id"]: msg for msg in api_contents["messages"]}
        assert message_id in api_contents
        assert api_contents[message_id] == contents
    def test_clone_receipt_rule_set(self, ses_client):