Native integration with Moosend

## Prerequisites

- [ ] I have searched for similar features requests in both open and closed tickets and cannot find a duplicate.
- [x] The feature is still missing in the latest stable version of Elementor ( Elementor Pro. )

**What problem is your feature request going to solve? Please describe.**
The problem to be solved is not getting contacts into my newsletter/e-mail-marketing-system with elementor. My system is called Moosend, as far as i can see they have an API.

**Describe the solution you'd like**
Moosend to be integrated with Elementor, so i can choose it from the options of what should happen when a webform is sent.

**Describe alternatives you've considered**
There is a plugin in the WP-repository, but it's very basic and doesn't solve all use-cases.

**Additional context**
Moosend is a high quality Newsletter and E-mail-Marketing system. I can see that it's not possible to integrate with all systems out there but imho this one is worth to take a look at, esp because of the possibility to integrate it deeply with wordpress and woocommerce.