Add current version as a constant, Matomo Tracking, and improve badges display in README

This pull request introduces several refactoring changes to enhance the project. It adds a constant to store the current version and updates the badges display in the README. The addition of the current version as a constant allows for easier management and access to the version information. Furthermore, the badges displayed in the README are improved for better readability and presentation. Additionally, this pull request includes the addition of the Matomo Tracking Script and a version bump to 0.9.8. These changes aim to optimize the project and improve its functionality.