docs: add copybutton sphinx extension (#4958)

docs/requirements.txt

@@ -1,6 +1,7 @@
 # primary
 furo==2024.8.6
 Sphinx==7.0.1
+sphinx-copybutton==0.5.2
 
 # dependencies
 alabaster==0.7.16

docs/src/conf.py

@@ -48,7 +48,7 @@ sys.path.insert(0, os.path.abspath('sphinx-plugins'))
 # Add any Sphinx extension module names here, as strings. They can be
 # extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
 # ones.
-extensions = ['manpage']
+extensions = ['manpage', 'sphinx_copybutton']
 
 # Add any paths that contain templates here, relative to this directory.
 templates_path = ['templates']