Tutorial: How to define samples

[JanSchankin]

We need an article that explains the Sampler API in detail. Since this is the core of DeepSampler we should design this article thoroughly.
The article should provide in-depth-information but it should also be easy to search in it, so that it can be used to quickly look things up.
The search-plugin of docsify should be able to find things in this article.

The article should not describe stubbing using the recorder and player, that will be another chapter.

https://ppi-ag.github.io/deep-sampler/#/stubbing/