Small issues with Atomkraft tutorial

[ivan-gavran]

Testing the existing Atomkraft tutorial, I found the following two small issues:

• upon installing (running pip install --upgrade atomkraft), I get the following error:

ERROR: pip's dependency resolver does not currently take into account all the packages that are installed. This behaviour is the source of the following dependency conflicts.
copier 6.1.0 requires packaging>=21.0, but you have packaging 20.9 which is incompatible.

The installation process goes through, but it is a bad feeling to see the Error message

• copying in the .md files (when pressing the copy symbol) copies too much (also the output)

[ivan-gavran]

(follows from #87 )

[ivan-gavran]

@hvanz : you had some ideas about what existed already

[ivan-gavran]

The second point in the description (about copying in the .md files): this is necessary for mdx. @hvanz doesn't see this as much of a problem. To be discussed with @andrey-kuprianov .

A potential solution (if one is necessary) is to wrap mdx commands into comments and have user-facing commands be pure

[ivan-gavran]

From a synchronous discussion: we will go with duplicated commands (user-facing and mdx ones), recognizing that it is not a perfect solution --> discussion issue