sphinx_design (#15198)

Adding new sphinx extension for designing responsive web components.

docs/conf.py

@@ -38,6 +38,7 @@ extensions = [
     'sphinx_inline_tabs',
     'sphinx_copybutton',
     'sphinx_panels',
+    'sphinx_design',
     'doxyrest',
     'cpplexer',
     'sphinx.ext.autodoc',

docs/requirements.txt

@@ -32,6 +32,7 @@ snowballstemmer==2.1.0
 soupsieve==2.2.1
 sphinx==4.5.0
 sphinx-copybutton==0.3.3
+sphinx-design==0.3.0
 sphinx-inline-tabs==2021.8.17b10
 sphinx-panels==0.6.0
 sphinx-sitemap==2.2.0