buildGoPackage: add nixpkgs-go maintainer

pkgs/development/go-packages/generic/default.nix

@@ -239,7 +239,11 @@ let
       # Add default meta information
       homepage = "https://${goPackagePath}";
       platforms = go.meta.platforms or lib.platforms.all;
-    } // meta;
+    } // meta // {
+      # add an extra maintainer to every package
+      maintainers = (meta.maintainers or []) ++
+                    [ lib.maintainers.nixpkgs-go ];
+    };
   });
 in if disabled then
   throw "${package.name} not supported for go ${go.meta.branch}"