add homeassistant examples

tools/homeassistant/README.md

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+# HomeAssistant Examples
+
+Disclaimer: these are collected examples from https://www.mikrocontroller.net/topic/525778 (Page 12)
+
+in manual.yaml you will find the setup for manual configuration, adapt your name (Terrasse) and the topic (inverter) to your needs and place it into configuration.yaml
+
+in autodiscovery.yaml you will find the setup for automatic discovery of the inverter
+
+Note: the config might need adaption to your system (mqtt, homeassistant etc)

tools/homeassistant/autodiscovery.yaml

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+mqtt:
+  broker: http://<IP des Brokers>
+  discovery: true
+  discovery_prefix: inverter

tools/homeassistant/manual.yaml

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+sensor:
+  - platform: mqtt
+    state_topic: "inverter/Terrasse/ch0/P_AC"
+    name: "Aktuelle Produktion HM-600"
+    device_class: energy
+    unit_of_measurement: "Watt"
+    value_template: >
+        {{value|round(2)}}
+    state_class: total_increasing
+    unique_id: "current_hm600"
+    last_reset_topic: "inverter/Terrasse/ch0/P_AC"
+    last_reset_value_template: "1970-01-01T00:00:00+00:00"
+  - platform: mqtt
+    state_topic: "inverter/Terrasse/ch0/YieldTotal"
+    name: "Gesamtproduktion HM-600"
+    device_class: energy
+    unit_of_measurement: "KW/H"
+    value_template: >
+        {{value|round(2)}}
+    state_class: total_increasing
+    unique_id: "total_hm600"
+    last_reset_topic: "inverter/Terrasse/ch0/YieldTotal"
+    last_reset_value_template: "1970-01-01T00:00:00+00:00"