[Doc] Added requirements.txt for Doc

ci/requirements-doc.txt

@@ -0,0 +1,40 @@
+#
+# These requirements were autogenerated by pipenv
+# To regenerate from the project's Pipfile, run:
+#
+#    pipenv lock --requirements --dev
+#
+
+# Note: in pipenv 2020.x, "--dev" changed to emit both default and development
+# requirements. To emit only development requirements, pass "--dev-only".
+
+-i https://pypi.org/simple
+alabaster==0.7.12
+attrs==21.2.0; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4'
+babel==2.9.1; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'
+certifi==2021.10.8
+charset-normalizer==2.0.7; python_version >= '3'
+docutils==0.17.1; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4'
+idna==3.3; python_version >= '3'
+imagesize==1.3.0; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'
+jinja2==3.0.3; python_version >= '3.6'
+markdown-it-py==1.1.0; python_version ~= '3.6'
+markupsafe==2.0.1; python_version >= '3.6'
+mdit-py-plugins==0.2.8; python_version ~= '3.6'
+myst-parser==0.15.2
+packaging==21.2; python_version >= '3.6'
+pygments==2.10.0; python_version >= '3.5'
+pyparsing==2.4.7; python_version >= '2.6' and python_version not in '3.0, 3.1, 3.2'
+pytz==2021.3
+pyyaml==6.0; python_version >= '3.6'
+requests==2.26.0; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4, 3.5'
+setuptools==59.1.1; python_version >= '3.6'
+snowballstemmer==2.1.0
+sphinx==4.3.0; python_version >= '3.6'
+sphinxcontrib-applehelp==1.0.2; python_version >= '3.5'
+sphinxcontrib-devhelp==1.0.2; python_version >= '3.5'
+sphinxcontrib-htmlhelp==2.0.0; python_version >= '3.6'
+sphinxcontrib-jsmath==1.0.1; python_version >= '3.5'
+sphinxcontrib-qthelp==1.0.3; python_version >= '3.5'
+sphinxcontrib-serializinghtml==1.1.5; python_version >= '3.5'
+urllib3==1.26.7; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4' and python_version < '4'