chore: update package list

Note that deno was removed since it still fails to handle things like
Next.js with the 2.0 release candidate and I'd rather not have to deal
with all the other issues I faced while trying to use it with React.

modules/shell.nix

@@ -79,7 +79,11 @@
       bacon
       clippy
       nodejs
-      deno
+      monolith
+      haylxon
+      nix-inspect
+      sherlock
+      remind
     ];
   };