Support the new MySql package name

Patching the null argument bug

Adding a readme file to the package

Mark release builds as CI builds

Library should run on .NET 6 instead

Version bump

One version per package

Merging latest changes for v5 release

Adding .NET 6 preview builds support

Temporarily adding .NET 6 download to github actions

v5 bump, depending on a single version of EF Core for all frameworks!