Docs: reordered index grid (#345)

* reordered index to have separate install card, and diataxis grid

* add Tutorials folder

* Explain that tutorials/README.md is just a blank placeholder file.  Can be removed in future.

* Update docs/index.rst

Co-authored-by: Leo Paoletti <164940351+lpaoletti@users.noreply.github.com>

* changed to quick start (no hyphen)

* missed index.rst for quick start edit

* change text to Using rocDecode

---------

Co-authored-by: Leo Paoletti <164940351+lpaoletti@users.noreply.github.com>

docs/install/install.rst

@@ -52,7 +52,7 @@ Prerequisites
   `amdgpu-install <https://rocm.docs.amd.com/projects/install-on-linux/en/latest/how-to/amdgpu-install.html>`_
 
   * Run: ``--usecase=rocm``
-  * To install rocDecode with minimum requirements, follow the :doc:`quick-start instructions <./quick-start>`
+  * To install rocDecode with minimum requirements, follow the :doc:`quick start instructions <./quick-start>`
 
 * Video Acceleration API Version ``1.5.0`` or later - ``Libva`` is an implementation for VA-API
 
@@ -86,8 +86,7 @@ Prerequisites
 
 .. note::
 
-  * All package installs are shown with the ``apt`` package manager. Use the appropriate package
-  manager for your operating system.
+  * All package installs are shown with the ``apt`` package manager. Use the appropriate package manager for your operating system.
 
   * On ``Ubuntu 22.04`` - Additional package required: ``libstdc++-12-dev``
 

docs/install/quick-start.rst

@@ -3,7 +3,7 @@
   :keywords: install, rocDecode, AMD, ROCm
 
 ********************************************************************
-rocDecode quick-start installation
+rocDecode quick start installation
 ********************************************************************
 
 To install the rocDecode runtime with minimum requirements, follow these steps: