Add missing docs requirements

Author: ryantam626

requirements-docs.txt

@@ -0,0 +1,19 @@
+# frozen requirements generated by pip-deepfreeze
+alabaster==0.7.13
+Babel==2.12.1
+certifi==2022.12.7
+charset-normalizer==3.1.0
+docutils==0.19
+furo==2023.3.27
+imagesize==1.4.1
+requests==2.30.0
+snowballstemmer==2.2.0
+Sphinx==6.2.1
+sphinx-basic-ng==1.0.0b1
+sphinxcontrib-applehelp==1.0.4
+sphinxcontrib-devhelp==1.0.2
+sphinxcontrib-htmlhelp==2.0.1
+sphinxcontrib-jsmath==1.0.1
+sphinxcontrib-qthelp==1.0.3
+sphinxcontrib-serializinghtml==1.1.5
+urllib3==2.0.2