Add raboof

mainly for one-off tests, such as seeing if I can further reproduce
https://github.com/python/cpython/issues/124924

modules/nixos/community-builder/keys/raboof

@@ -0,0 +1 @@
+ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIMpM+jZrz5f2imQD71+pPmvDM5aGSyz/5VJH61g4Q9SF raboofje@bzzt.net

modules/nixos/community-builder/users.nix

@@ -120,6 +120,12 @@ let
       keys = ./keys/pinpox;
     };
 
+    raboof = {
+      # lib.maintainers.raboof, https://github.com/raboof
+      trusted = true;
+      keys = ./keys/raboof;
+    };
+
     schmittlauch = {
       trusted = true;
       keys = ./keys/schmittlauch;