add mkdocs

docs/widgets/services/moonraker.md

@@ -0,0 +1,12 @@
+---
+title: Moonraker (Klipper)
+description: Moonraker (Klipper) Widget Configuration
+---
+
+Allowed fields: `["printer_state", "print_status", "print_progress", "layers"]`.
+
+```yaml
+widget:
+    type: moonraker
+    url: http://moonraker.host.or.ip:port
+```