### 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_
ConfigurationSetName,
    CreateConfigurationSetEventDestinationResponse,
    DeleteConfigurationSetEventDestinationResponse,
    DeleteConfigurationSetResponse,
    DeleteTemplateResponse,
    Destination,
    EventDestination,
    EventDestinationDoesNotExistException,
    EventDestinationName,
    GetIdentityVerificationAttributesResponse,
    IdentityList,
    IdentityVerificationAttributes,
    InvalidSNSDestinationException,
    ListTemplatesResponse,
    MaxItems,
    Message,
    MessageId,
    MessageRejected,
    MessageTagList,
    NextToken,
    RawMessage,
    ReceiptRuleSetName,
    SendEmailResponse,
    SendRawEmailResponse,
    SendTemplatedEmailResponse,
    SesApi,
    TemplateData,
    TemplateName,
    VerificationAttributes,
    VerificationStatus,