ci: Add vira config

Author: srid

vira.hs

@@ -0,0 +1,10 @@
+-- Pipeline configuration for Vira <https://vira.nixos.asia/>
+
+\ctx pipeline ->
+  pipeline
+    { build.systems =
+        [ "x86_64-linux"
+        , "aarch64-darwin"
+        ]
+    , signoff.enable = True
+    }