refactor: cheatsheet and whatsnew functions into separate modules and implement sidebar ordering (#656)

Co-authored-by: pyansys-ci-bot <[email protected]>

Author: Revathyvenugopal162

doc/changelog.d/656.miscellaneous.md

@@ -0,0 +1 @@
+cheatsheet and whatsnew functions into separate modules and implement sidebar ordering

doc/source/user-guide/options.rst

@@ -257,6 +257,7 @@ main ``index.rst`` file and the ``learning.rst`` file in its "Getting started" s
     the theme is using `pdf2image`. So you should have the ``poppler`` package installed in your system.
     For more information, see the `pdf2image documentation <https://pypi.org/project/pdf2image/>`_.
 
+
 What's new section
 ------------------
 
@@ -350,3 +351,10 @@ The following images show a sample "What's new" section and sidebar in the chang
 
         .. image:: ../_static/whatsnew_sidebar.png
            :alt: What's new sidebar
+
+
+.. note::
+
+    If you are using both the "whatsnew" and "cheatsheet" options, the "cheatsheet" option will be
+    displayed first in the left navigation pane, followed by the "What's new" section to maintain
+    sidebar consistency.

doc/styles/config/vocabularies/ANSYS/accept.txt

@@ -24,3 +24,4 @@ Sewell
 (?i)Sphinx-Gallery
 (?i)favicon
 astroid
+(?i)whatsnew