Add 498.pythonformat to malicious extensions (#878)

Co-authored-by: amvanbaren <[email protected]>

Author: amvanbaren

extension-control/extensions.json

@@ -3,7 +3,8 @@
         "kyntrack.log-matrix",
         "bipro.bipro-dev",
         "Equinusocio.vsc-material-theme",
-        "Equinusocio.vsc-material-theme-icons"
+        "Equinusocio.vsc-material-theme-icons",
+        "498.pythonformat"
     ],
     "search": [
         {