Mkdocs material (#593)

* Squashed commit of the following:

commit 82d9c25d9a
Author: mauwii <Mauwii@outlook.de>
Date:   Wed Sep 14 19:29:11 2022 +0200

    fix branch name in mkdocs-flow

commit 2e276cecc1
Author: mauwii <Mauwii@outlook.de>
Date:   Wed Sep 14 19:28:35 2022 +0200

    fix theme name

commit 2eb77c1173
Author: mauwii <Mauwii@outlook.de>
Date:   Wed Sep 14 19:14:42 2022 +0200

    fixed some links and formating in main README

commit 66a7152e48
Author: mauwii <Mauwii@outlook.de>
Date:   Wed Sep 14 08:58:58 2022 +0200

    trigger mkdocs deployment on main

commit 897cc373ce
Merge: 89da371 3b5a830
Author: Matthias Wild <40327258+mauwii@users.noreply.github.com>
Date:   Wed Sep 14 07:51:23 2022 +0200

    Merge pull request #1 from mauwii/mkdocs

    Mkdocs

commit 3b5a8308eb
Author: mauwii <Mauwii@outlook.de>
Date:   Wed Sep 14 07:42:56 2022 +0200

    huge update
    I was pretty busy trying to make the Readmes / docs  look good in MkDocs

commit 0b4f5a926f
Author: mauwii <Mauwii@outlook.de>
Date:   Wed Sep 14 07:41:45 2022 +0200

    update mkdocs config

commit 872172ea70
Author: mauwii <Mauwii@outlook.de>
Date:   Wed Sep 14 07:33:49 2022 +0200

    added the mkdocs-git-revision-date-plugin

commit eac81bf875
Author: mauwii <Mauwii@outlook.de>
Date:   Wed Sep 14 06:46:43 2022 +0200

    add  prettier config
    remove markdownlint
    move and rename requirements-mkdocs.txt

commit b36d4cc088
Author: mauwii <Mauwii@outlook.de>
Date:   Wed Sep 14 02:06:39 2022 +0200

    add dark theme

commit a14f18fede
Author: mauwii <Mauwii@outlook.de>
Date:   Wed Sep 14 01:38:02 2022 +0200

    update mkdocs flow and config

commit 2764b48693
Author: mauwii <Mauwii@outlook.de>
Date:   Wed Sep 14 01:15:33 2022 +0200

    add mkdocs workflow

commit 1bd22523b1
Author: mauwii <Mauwii@outlook.de>
Date:   Wed Sep 14 00:57:37 2022 +0200
    I already begun with formating /  revising the sites

* change repository in mkdocs config to lstein

* adapt changes from repos main README.md

* add PR to mkdocs-flow

* update docs/index.md
- removed unecessary headlines
- added instructions how to host the docs locally
- removed TOC since it is already available via MkDocs
- update appearance of the latest changes

* Update appearance of docs/featuers/changelog

* add me to the contributors
and a small cosmetical change to docs/other/CLI.md

Co-authored-by: Lincoln Stein <lincoln.stein@gmail.com>

docs/other/CONTRIBUTORS.md

@@ -50,6 +50,7 @@ We thank them for all of their time and hard work.
 - [Mihai](https://github.com/mh-dm)
 - [Any Winter](https://github.com/any-winter-4079)
 - [Doggettx](https://github.com/doggettx)
+- [Matthias Wild](https://github.com/mauwii)
 
 ## __Original CompVis Authors:__