Enhance documentation

[daniel-mader]

Description

The documentation of the individual crates should be easy to understand for first-time users. Simple diagrams on how the individual crates are related should be included.

Motivation

Improve developer experience

Resources

No response

To-do List

• add README.md to each crate in the monorepo
• generate and publish docs to a website (docs.impierce.com?)
• add diagrams