[Feature]: Extended documentation for Sidebar

[simplyratl]

Describe the feature

Sidebar looks incredible, but with lack of documentation how to implement it, it makes it really hard to use. You get so many components with installation of sidebar via cli, but have to manually read the code to see how it works.
At least it would be nice to get the code for the showcase of the sidebar to get a better idea how to use it!

Additional information

• I intend to submit a PR for this feature.
• I have already implemented and/or tested this feature.

[Whbbit1999]

Let me try to finish it.