Add Doc for Legrand 067776A Shutter SW with with level control (#2245)

* Add 067776A images (Shutter SW with level control)

* Add doc for Legrand 067776A

* Update 067776A.md

* Update 067776A.md

docs/devices/067776A.md

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+---
+title: "Legrand 067776A control via MQTT"
+description: "Integrate your Legrand 067776A via Zigbee2MQTT with whatever smart home infrastructure you are using without the vendor's bridge or gateway."
+addedAt: 2023-10-03T20:27:32Z
+pageClass: device-page
+---
+
+<!-- !!!! -->
+<!-- ATTENTION: This file is auto-generated through docgen! -->
+<!-- You can only edit the "Notes"-Section between the two comment lines "Notes BEGIN" and "Notes END". -->
+<!-- Do not use h1 or h2 heading within "## Notes"-Section. -->
+<!-- !!!! -->
+
+# Legrand 067776A
+
+|     |     |
+|-----|-----|
+| Model | 067776A  |
+| Vendor  | [Legrand](/supported-devices/#v=Legrand)  |
+| Description | Netatmo wired shutter switch with level control|
+| Exposes | cover (state, position), action, led_in_dark, identify, linkquality |
+| Picture | ![Legrand 067776A](https://www.zigbee2mqtt.io/images/devices/067776A.jpg) |
+
+
+<!-- Notes BEGIN: You can edit here. Add "## Notes" headline if not already present. -->
+## Notes
+You can calibrate your device (to enable position support) by closing the shutter (or opening it if your cover 
+position is inverted) and pressing both the up and down buttons for about 5 seconds until you see a blinking yellow 
+light. The shutter will begin calibrating itself and will open and close a few times (this process takes a few 
+minutes to complete).
+
+### Model number
+Model number depends on the country and the colour of the devices.
+French models are branded as Céliane with Netatmo, and models for this device depends on the colour, with the following numbers: "0 677 26A", "0 677 76A" and "0 648 96A".
+Spanish models are branded as Legrand Valena Next, and models for this device depends on the colour, with the following numbers: "7 418 07A", "7 418 37A" and "7 418 67A".
+<!-- Notes END: Do not edit below this line -->
+
+
+## OTA updates
+This device supports OTA updates, for more information see [OTA updates](../guide/usage/ota_updates.md).
+
+
+## Options
+*[How to use device type specific configuration](../guide/configuration/devices-groups.md#specific-device-options)*
+
+* `invert_cover`: Inverts the cover position, false: open=100,close=0, true: open=0,close=100 (default false). The value must be `true` or `false`
+
+* `no_position_support`: Set to true when your device only reports position 0, 100 and 50 (in this case your device has an older firmware) (default false). The value must be `true` or `false`
+
+
+## Exposes
+
+### Cover 
+The current state of this cover is in the published state under the `state` property (value is `OPEN` or `CLOSE`).
+To control this cover publish a message to topic `zigbee2mqtt/FRIENDLY_NAME/set` with payload `{"state": "OPEN"}`, `{"state": "CLOSE"}`, `{"state": "STOP"}`.
+It's not possible to read (`/get`) this value.
+To change the position publish a message to topic `zigbee2mqtt/FRIENDLY_NAME/set` with payload `{"position": VALUE}` where `VALUE` is a number between `0` and `100`.
+
+### Action (enum)
+Triggered action (e.g. a button click).
+Value can be found in the published state on the `action` property.
+It's not possible to read (`/get`) or write (`/set`) this value.
+The possible values are: `moving`, `identify`, ``.
+
+### Led in dark (binary)
+Enables the LED when the power socket is turned off,
+            allowing to see it in the dark.
+Value can be found in the published state on the `led_in_dark` property.
+To read (`/get`) the value publish a message to topic `zigbee2mqtt/FRIENDLY_NAME/get` with payload `{"led_in_dark": ""}`.
+To write (`/set`) a value publish a message to topic `zigbee2mqtt/FRIENDLY_NAME/set` with payload `{"led_in_dark": NEW_VALUE}`.
+If value equals `ON` led in dark is ON, if `OFF` OFF.
+
+### Identify (enum)
+Blinks the built-in LED to make it easier to find the device.
+Value will **not** be published in the state.
+It's not possible to read (`/get`) this value.
+To write (`/set`) a value publish a message to topic `zigbee2mqtt/FRIENDLY_NAME/set` with payload `{"identify": NEW_VALUE}`.
+The possible values are: `blink`.
+
+### Linkquality (numeric)
+Link quality (signal strength).
+Value can be found in the published state on the `linkquality` property.
+It's not possible to read (`/get`) or write (`/set`) this value.
+The minimal value is `0` and the maximum value is `255`.
+The unit of this value is `lqi`.
+