Move the code from the separate dependency pfrenssen/matomo-reporting-api into this module

Problem/Motivation

As proposed in https://www.drupal.org/project/matomo_reporting_api/issues/3258075#comme... ✨ Add Drupal 10 compatibility to Matomo reporting API Needs review

Move the code from the separate dependency pfrenssen/matomo-reporting-api into the Drupal module, mainly to reduce maintenance and complexity. I can't see that the lib is used in any other project.

Steps to reproduce

Proposed resolution

Remaining tasks

User interface changes

API changes

Data model changes