[ENHANCEMENT]: implement a database migration tool

[jessevz]

Description

To further improve the maintainability of Hashtopolis it can help to use some kind of standardised database migration tool. Currently we use a lot of handcrafted mysql scripts for migrations which can be error prone and hard to get into for new developers. A common tool for database migration in php is phinx (https://github.com/cakephp/phinx). What is nice about this, is that we can also use it to seed the database, which can be used to seed the database with large test data for the ci/cd testing. This helps for issue: #983