Django-db-views

- Adjusted tests to django 4.2

- Fix view_migration_context
- Fix function that generate table hash name, to return lower case strings always

- Fix broken migration from 0.1.3 version. https://github.com/BezBartek/django-db-views/issues/20

- Detect and delete removed views or views implementations for specified engines.
- Materialized Views
- Started using project state to track models (Operations defines state_forwards)
- Added view registry to simplify tracking of model changes

- Change log starts from 0.1.3