* Try to make the custom doc page (#284)

* [Fix] link syntax

* [Fix] Generate the doc for custom outside the provider loop + Remove custom from providers list.

* [Fix] Add custom menu in side bar

* docs(Custom): Add more examples (#284)

* Edges support

* Documentation and additional style attribute

* Better example and review changes

* Fix xlabel

* Fix docs

* Add Edge default properties

* Fix edge docs

Co-authored-by: Andrew Selivanov <a_selivanov@wargaming.net>

* feat: add custom node class

* docs: add example about custom node

* docs: improve example about custom node usage

* docs: fix variable name