Support of inheritance

What's Changed

• Feature/new project structure by @win7user10 in #28
• Feature/Entity inheritance support by @win7user10 in #30
• Feature/correct registering ef core triggers services by @win7user10 in #31
• Feature/one branch for all versions by @win7user10 in #32

API Changes

Registering custom method call converters changed, see the documentation

Full Changelog: v6.1.0...6.2.0