Move away from numtide

Get rid of the numtide shell, as it doesn't have any good support for
shellHook. Also, directly create the pre-commit check so that we can
leverage its resulting bits in the packages.

We now will have acces to things like pre-commit-config.yaml in the
folder structure

.vscode/launch.json

@@ -24,4 +24,4 @@
             "cwd": "${workspaceFolder}"
         }
     ]
-}
+}