Embed into the library some widely known dataset to learn better our library

[zaleslaw]

For example, KotlinDL library includes some widely known datasets for solving initial tasks and API.

Better to have these datasets small and embedded into the library (probably as a separate module) instead of loading from external resources.

Also we should have an information about that on the Kotlin Documentation and KDF documentation sites
Great, if Kandy library will include some initial examples in the gallery with that datasets.