Added modules for PDF compilation

requirements.txt

@@ -1,11 +1,18 @@
 alabaster==0.7.12
 Babel==2.10.3
+beautifulsoup4==4.12.2
+Brotli==1.0.9
+bs4==0.0.1
 certifi==2022.6.15
+cffi==1.15.1
 charset-normalizer==2.1.0
 click==8.1.3
 colorama==0.4.5
+cssselect2==0.7.0
 docutils==0.17.1
 Flask==2.2.2
+fonttools==4.39.4
+html5lib==1.1
 idna==3.3
 imagesize==1.4.1
 importlib-metadata==4.12.0
@@ -18,15 +25,22 @@ mdit-py-plugins==0.3.0
 mdurl==0.1.1
 myst-parser==0.18.0
 packaging==21.3
+Pillow==9.5.0
 pkg_resources==0.0.0
+pycparser==2.21
+pydyf==0.6.0
 Pygments==2.12.0
 pyparsing==3.0.9
+pyphen==0.14.0
 pytz==2022.2
 PyYAML==6.0
 requests==2.28.1
+six==1.16.0
 snowballstemmer==2.2.0
+soupsieve==2.4.1
 Sphinx==5.1.1
 sphinx-rtd-theme==1.0.0
+sphinx-weasyprint-builder==0.1.3
 sphinxcontrib-applehelp==1.0.2
 sphinxcontrib-devhelp==1.0.2
 sphinxcontrib-htmlhelp==2.0.0
@@ -34,8 +48,12 @@ sphinxcontrib-jsmath==1.0.1
 sphinxcontrib-qthelp==1.0.3
 sphinxcontrib-serializinghtml==1.1.5
 sphinxcontrib-svg2pdfconverter==1.2.0
+tinycss2==1.2.1
 typing_extensions==4.3.0
 uc-micro-py==1.0.1
 urllib3==1.26.11
+weasyprint==58.1
+webencodings==0.5.1
 Werkzeug==2.2.2
 zipp==3.8.1
+zopfli==0.2.2