[ doc ] Adding tutorials

[GulinSS]

Here we are going to use https://openrouter.ai/ with https://github.com/charmbracelet/crush and https://github.com/The-Pocket/PocketFlow-Tutorial-Codebase-Knowledge (https://code2tutorial.com/) to improve our documentation by writing templated tutorials.

AI result is not a ready for use, so, manual tweaking is still needed howbeit removal operations I like more than putting something in when we are talking about text and code.

It is a watch-like PR which is not for merging, just for demo of working progress

[GulinSS]

Do not 👀, by the end of work we will have only tutorials at the folder and nothing more. Everything other are temporal drafts.

[GulinSS]

Ready to demo

[GulinSS]

The issue at CI has no relation to the subject of PR

 7/27: Building Tutorials.T04AutomaticGeneratorDerivation (src/Tutorials/T04AutomaticGeneratorDerivation.md)
Error: Failing block failed with the wrong error.
Expected "No constructors found for the type `^prim^.String`" but got:
While processing right hand side of genEntry. Error during reflection: While processing right hand side of {arg:13543},<Main.Entry>[]. While processing right hand side of {conArg:13578},<<Main.File>>. Undefined name <^prim^.String>[].