[New Integration] WhoisFreaks Threat Intelligence

# Integration release checklist

This checklist is intended for integrations maintainers to ensure consistency
when creating or updating a Package, Module or Dataset for an Integration.

### All changes

- [x] Change follows the [contributing guidelines](https://github.com/elastic/integrations/blob/main/CONTRIBUTING.md)
- [x] Supported versions of the monitoring target are documented
- [x] Supported operating systems are documented (if applicable)
- [x] Integration or [System tests](https://github.com/elastic/elastic-package/blob/master/docs/howto/system_testing.md) exist
- [x] Documentation exists, [useful guidelines](https://github.com/elastic/integrations/blob/main/docs/documentation_guidelines.md) to follow
- [x] Fields follow [ECS](https://github.com/elastic/ecs) and [naming conventions](https://www.elastic.co/guide/en/beats/devguide/master/event-conventions.html)
- [x] At least a manual test with ES / Kibana / Agent has been performed.
- [x] Required Kibana version set to:

The issue body contains only a completed integration release checklist and links to CONTRIBUTING.md, system testing, and documentation guidelines. Start by reviewing those linked guidelines and identifying the WhoisFreaks integration entry points; done should mean the integration work is specified and each applicable checklist item is supported.

Written by the indexing model from the issue text.