docs: Syncup mkdocs.yml with the current documention

[rene]

Add recent documentation files that were not added to the mkdocs.yml.

[OhmSpectator]

I think we also need a README.ms in the mkdocs dir where remind on how to build the documentation =D

[OhmSpectator]

@rene, I tried to run the python script in the dir, but got only this:

.
├── mkdocs.yml
├── output
│   ├── output
│   │   ├── output
│   │   │   └── requirements.txt
│   │   └── requirements.txt
│   └── requirements.txt
├── prepare_mkdocs.py
└── requirements.txt

So, still trying to figure out how to build it )))

[OhmSpectator]

If I run the mkdocs tool locally, I get this

➜  mkdocs git:(fix-mkdocs) ✗ mkdocs build
ERROR    -  Config value: 'docs_dir'. Error: The path /home/nikolay/projects/pr-reviews/eve-4173/docs/mkdocs/dist/docs-src/ isn't an
            existing directory.
Aborted with 1 Configuration Errors!

[OhmSpectator]

I found the solution!

python3 docs/mkdocs/prepare_mkdocs.py dist/docs-src "https://github.com/lf-edge/eve/blob/master"
cp docs/mkdocs/mkdocs.yml .
mkdocs build
mkdocs serve

Could we please add it to some doc?... Or even make it available as a Makefile target?