Added Zigbee2MQTT blueprint for OSRAM Smart+ Mini Switch

[misberner]

Blueprint Checklist

• You viewed the README and conformed to the naming conventions
• You ordered the actions as stated in the README action order
• All filenames are lowercase and uses '-' for spaces and not '_' while using {service-name}-{switch-name-or-type}.yaml format
• Images are png
• Image backgrounds are transparent and is cropped to the device boundries
• Images has a maximum width of 800px and maximum height of 500px
• There are no missing buttons or actions
• Your integration/service is running on the latest version
• You have tested your blueprints and made sure each button and action works

Zigbee2MQTT

• (older devices) You have ensured legacy is off/false for the device in the Z2M devices Settings (specific) page and that your actions matches those with legacy off?

[Sian-Lee-SA]

Nice, Thanks!

[frauhottelmann]

This is blueprint unfortunately only works with zigbee2mqtt if you use this device in legacy mode. It is recommended to use it with legacy = false: https://www.zigbee2mqtt.io/devices/AC0251100NJ_AC0251600NJ_AC0251700NJ.html

legacy: Set to false to disable the legacy integration (highly recommended), will change structure of the published payload (default true). The value must be true or false

Then it reports normal on the action entity. With other values as well.
@Sian-Lee-SA how do you want to do this? Another blueprint?