Add the monitor widget to the bar

Claude-Session: https://claude.ai/code/session_014ADhvRXuiTvrXSbConxUey

omarchy/shell.json

@@ -56,6 +56,9 @@
         {
           "id": "omarchy.audio"
         },
+        {
+          "id": "omarchy.monitor"
+        },
         {
           "id": "blob.cpu",
           "type": "command",