[2.0.x] Drupal 10 compatibility

Problem/Motivation

Currently, you can't install Matomo in Drupal 10 installation.

Steps to reproduce

Try to install the module in Drupal 10 with Composer, and see that it fails:

$ composer require -n drupal/matomo
[...]
Your requirements could not be resolved to an installable set of packages.
  Problem 1
    - Root composer.json requires drupal/matomo ^1.14 -> satisfiable by drupal/matomo[1.14.0, 1.x-dev].
    - drupal/matomo[1.14.0, ..., 1.x-dev] require drupal/core ^8.8.0 || ^9.0.0 -> found drupal/core[8.8.0-alpha1, ..., 8.9.x-dev, 9.0.0-alpha1, ..., 9.4.x-dev] but the package is fixed to 10.0.x-dev (lock file version) by a partial update and that version does not match. Make sure you list it as an argument for the update command.

Proposed resolution

Add Drupal 10 under core_version_requirement in the matomo.info.yml file.

Remaining tasks

• Add Drupal 10 as a core_version_requirement
• Fix PHPUnit test errors and self deprecation notices:
  

  1) Drupal\Tests\matomo\Functional\AdminSettingsFormTest::testPageTracking with data set #2 ('/node/1\n/blog/*/view\nshop\n<front>', true) Failed asserting that false matches expected true.
  
    3x: The Drupal\Tests\matomo\Functional\AdminSettingsFormTest::$modules property must be declared protected. See https://www.drupal.org/node/2909426
      3x in DrupalListener::startTest from Drupal\Tests\Listeners