added requirements.txt for sphinx

sphinx/requirements.txt

@@ -0,0 +1,30 @@
+accessible-pygments==0.0.4
+alabaster==0.7.13
+Babel==2.14.0
+beautifulsoup4==4.12.2
+certifi==2023.11.17
+charset-normalizer==3.3.2
+docutils==0.19
+idna==3.6
+imagesize==1.4.1
+importlib-metadata==6.7.0
+Jinja2==3.1.3
+MarkupSafe==2.1.3
+packaging==23.2
+pydata-sphinx-theme==0.13.3
+Pygments==2.17.2
+pytz==2023.3.post1
+requests==2.31.0
+snowballstemmer==2.2.0
+soupsieve==2.4.1
+Sphinx==5.3.0
+sphinxcontrib-applehelp==1.0.2
+sphinxcontrib-devhelp==1.0.2
+sphinxcontrib-globalsubs==0.1.1
+sphinxcontrib-htmlhelp==2.0.0
+sphinxcontrib-jsmath==1.0.1
+sphinxcontrib-qthelp==1.0.3
+sphinxcontrib-serializinghtml==1.1.5
+typing_extensions==4.7.1
+urllib3==2.0.7
+zipp==3.15.0