This commit changes how the config class gets it's values to a more solid way.
Additonally, the DSN was updated to use a correct format, allowing PDO to connect (With a wrong DSN, it tries to connect to something that doesn't exist).
Spinning up webserver
Test URL (theoretically): https://billing.spacejewel.ga/paddle/[key]/detectIntent should output all vars in this commit
In production, it should redirect the logic and execute different code (Instead of using an url redirect)
