docs: add copybutton to code blocks (#374)

Author: JacobCoffee

docs/conf.py

@@ -22,7 +22,7 @@
 # Add any Sphinx extension module names here, as strings. They can be
 # extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
 # ones.
-extensions = ['myst_parser']
+extensions = ['myst_parser', "sphinx_copybutton"]
 
 # Add any paths that contain templates here, relative to this directory.
 templates_path = ["_templates"]

docs/requirements.txt

@@ -1,3 +1,4 @@
 furo
 sphinx
 myst-parser
+sphinx-copybutton