In .NET Framework there isn't a standardized way to do DI but in .NET Core, there is a unified API for Dependency Injection that Microsoft developed (Microsoft.Extensions.DependencyInjection).
Most C# libraries and frameworks offer extension methods that makes it easy for users to integrate the library with their existing DI implementation (especially AspNetCore projects).
Configuring the DI container:
My proposal is the following:
This is a very rough draft. Some use cases might not be covered in this proposal.
Also, similar extension methods should be added for the DSE driver with different names like services.AddDseCluster()
It might be enough to add an example to the examples directory in the github repo instead of creating a new package.