openSUSE on ZFS has been written

This is a basic HOWTO page for OpenSUSE. This pages not official. This is a personal work represents how I do it.

* Added openSUSE on ZFS basic pages. For Leap and Tumbleweed this pages generated in lights of Debian and Ubuntu pages.

Signed-off-by: Suleyman Poyraz <zaryob.dev@gmail.com>

docs/Getting Started/openSUSE/index.rst

@@ -0,0 +1,35 @@
+.. highlight:: sh
+
+openSUSE
+========
+
+.. contents:: Table of Contents
+  :local:
+
+Installation
+------------
+
+If you want to use ZFS as your root filesystem, see the `Root on ZFS`_
+links below instead.
+
+ZFS packages are not included in official openSUSE repositories, but repository of `filesystems projects of openSUSE
+<https://software.opensuse.org/download.html?project=filesystems&package=zfs>`__ 
+includes such packages of filesystems including OpenZFS.
+
+openSUSE progresses through 3 main distribution branches, these are called Tumbleweed, Leap and SLE. There are ZFS packages available for all three.
+
+
+External Links
+--------------
+
+* `openSUSE OpenZFS page <https://en.opensuse.org/OpenZFS>`__
+
+Root on ZFS
+-----------
+.. toctree::
+  :maxdepth: 1
+  :glob:
+
+  *Root on ZFS
+
+