Start migration of docs from MineRealm to the docs site (#28)

* Migrate commands to MkDocs and update MkDocs version

* Update index page

* Remove mkdocs version number from requirements

* restore readme file

* Revert header style to one sided

mkdocs.yml

@@ -1,3 +1,8 @@
 site_name: CoreProtect Documentation
+site_url: https://docs.coreprotect.net/
 theme: readthedocs
-repo_url: https://github.com/PlayPro/CoreProtect
+repo_url: https://github.com/PlayPro/CoreProtect
+nav:
+    - Home: index.md
+    - Configuration: config.md
+    - Commands: commands.md