Int64 Poisson distribution sampling

[dennisbrons]

The Poisson distribution implements IDistribution<Int32> and offers
Sample for distribution sampling in the int32 range. For various use cases, we need an int64/long instead. Could this be added? 🙏

[DarkMust]

Hello, I’ve created a PR that addresses this issue here: #491
I’m, of course, open to any comments or suggestions for improvements. Looking forward to your feedback!