fix(ring-mqtt): move to stable + docs (#3675)

* fix(ring-mqtt): move to stable + docs

* update files

* Apply suggestions from code review

* update md

* lint

* lint

Co-authored-by: Stavros Kois <47820033+stavros-k@users.noreply.github.com>

charts/stable/ring-mqtt/Chart.yaml

@@ -0,0 +1,32 @@
+apiVersion: v2
+appVersion: "5.0.3"
+dependencies:
+  - name: common
+    repository: https://library-charts.truecharts.org
+    version: 10.5.6
+deprecated: false
+description: Interact with Ring Inc products (cameras/alarms/smart lighting) via MQTT.
+home: https://truecharts.org/docs/charts/stable/ring-mqtt
+icon: https://truecharts.org/img/hotlink-ok/chart-icons/ring-mqtt.png
+keywords:
+  - ring-mqtt
+  - HomeAutomation
+  - Tools-Utilities
+kubeVersion: ">=1.16.0-0"
+maintainers:
+  - email: info@truecharts.org
+    name: TrueCharts
+    url: https://truecharts.org
+name: ring-mqtt
+sources:
+  - https://github.com/truecharts/charts/tree/master/charts/stable/ring-mqtt
+  - https://github.com/tsightler/ring-mqtt
+  - https://hub.docker.com/r/tsightler/ring-mqtt/
+type: application
+version: 1.0.0
+annotations:
+  truecharts.org/catagories: |
+    - HomeAutomation
+    - Tools-Utilities
+  truecharts.org/SCALE-support: "true"
+  truecharts.org/grade: U