VS Code font rendering looks ugly on Linux

source : https://github.com/Microsoft/vscode/issues/35675

1. Create fontconfig.conf and put this file in /usr/share/code/fontconfig.conf

   <?xml version='1.0'?>
   <!DOCTYPE fontconfig SYSTEM 'fonts.dtd'>
   <fontconfig>
     <!-- Force RGBA subpixel aliasing to «none» in code and code-insiders -->
     <match target="pattern">
       <or>
         <test name="prgname">
           <string>code</string>
         </test>
         <test name="prgname">
           <string>code-insiders</string>
         </test>
       </or>
       <edit name="rgba" mode="assign">
         <const>none</const>
       </edit>
     </match>
   </fontconfig>

2. Symlink file to /etc/fonts/conf.d/99-vscode.conf