heimdall: Add caddy configuration for boskma.frl root

machines/heimdall/configuration.nix

@@ -137,6 +137,13 @@
               file_server
             '';
           };
+
+        "boskma.frl" = {
+          extraConfig = ''
+            root * /var/www/boskma.frl
+            file_server
+          '';
+        };
       };
     };
   };