feature(read pdf paper then write summary):

add a func called readPdf in toolbox, which can read pdf paper to str. then use bs4.BeautifulSoup to clean content.

requirements.txt

@@ -1,3 +1,10 @@
 gradio>=3.23
-requests[socks]
-mdtex2html
+requests[socks]~=2.28.2
+mdtex2html~=1.2.0
+Markdown~=3.4.3
+latex2mathml~=3.75.1
+bs4~=0.0.1
+lxml~=4.6.4
+beautifulsoup4~=4.12.0
+numpy~=1.24.2
+pdfminer.six