Add Vitepress docs (#326)

* Add vitepress for docs

* some fix

* Use vitepress and update docs

* Use vitepress and update docs

* Update README.md

* Add favicon

* Add docs by @jiriks74

Co-authored-by: jiriks74 <jiri@stefka.eu>

---------

Co-authored-by: jiriks74 <jiri@stefka.eu>

docs/contributing/community.md

@@ -0,0 +1,6 @@
+# Community
+
+The following is a list of resources made by happy users of Opengist. Feel free to make a PR add your own!
+
+- [Aetherinox/opengist-debian](https://github.com/Aetherinox/opengist-debian) - A Debian package for Opengist
+- [How to Install Opengist on Your Synology NAS](https://mariushosting.com/how-to-install-opengist-on-your-synology-nas/) - A guide to install Opengist on a Synology NAS