wip for db_migrations for core schema

classes/config.php

classes/db/migrations.php

classes/debug.php

sql/mysql/migrations/10.sql

sql/mysql/migrations/100.sql

sql/mysql/migrations/101.sql

sql/mysql/migrations/102.sql

sql/mysql/migrations/103.sql

sql/mysql/migrations/104.sql

sql/mysql/migrations/105.sql

sql/mysql/migrations/106.sql

sql/mysql/migrations/107.sql

sql/mysql/migrations/108.sql

sql/mysql/migrations/109.sql

sql/mysql/migrations/11.sql

sql/mysql/migrations/110.sql

sql/mysql/migrations/111.sql

sql/mysql/migrations/112.sql

sql/mysql/migrations/113.sql

sql/mysql/migrations/114.sql