Simplecrud

This release abandons the idea of `CRUDFactory`.

Changes:
- :arrow_up: Turn SQLALchemy into mandatory dependency
- :memo: Fix README according to new release
- :memo: Add examples
- :green_heart: Save unnecessary CI runs
- :construction_worker: Add MySQL 8.0 docker image
- :see_no_evil: Ignore sqlite database files
- :fire: Delete python scripts
- :white_check_mark: Add tests according to updated release
- :wrench: Add flake8 and mypy configurations
- :truck: Rename project
- :hammer: Add Makefile

Create the core feature: SQLAlchemy factory.

Other changes:
- :building_construction: Change package name from 'crud-factory' to 'crudfactory' (5)
- :white_check_mark: Add 100% coverage to SQLAlchemy factory (4)
- :construction_worker: Add coverage badge (3)