Allow contacts to be edited and deleted through the service

Problem/Motivation

For a project, we needed to be able to edit and delete contacts in mautic. We added the corresponding code and interface to the module.

Proposed resolution

Integrate the proposed changes into the module

Remaining tasks

• Review the changes
• Integrate the changes into the module

User interface changes

None

API changes

Adds two new methods to MauticApiServiceInterface: editContact and deleteContact

Data model changes

None