Auto gen parameter doc (#14)

* added script to generate parameter documentation

* extended readme

* added templated parameter pages

* Update build-docs.yaml

* .

* .

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Co-authored-by: CaCO3 <caco@ruinelli.ch>

generate-param-docs/parameter-docs/MQTT/ClientID.md

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+# Parameter `ClientID`
+Default Value: `watermeter`
+
+## Description
+Please fill me with an explanation and useful links
+

generate-param-docs/parameter-docs/MQTT/HomeassistantDiscovery.md

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+# Parameter `HomeassistantDiscovery`
+Default Value: `true`
+
+## Description
+Please fill me with an explanation and useful links
+

generate-param-docs/parameter-docs/MQTT/MainTopic.md

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+# Parameter `MainTopic`
+Default Value: `watermeter`
+
+## Description
+Please fill me with an explanation and useful links
+

generate-param-docs/parameter-docs/MQTT/MeterType.md

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+# Parameter `MeterType`
+Default Value: `other`
+
+## Description
+Please fill me with an explanation and useful links
+

generate-param-docs/parameter-docs/MQTT/SetRetainFlag.md

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+# Parameter `SetRetainFlag`
+Default Value: `true`
+
+## Description
+Please fill me with an explanation and useful links
+

generate-param-docs/parameter-docs/MQTT/Uri.md

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+# Parameter `Uri`
+Default Value: `mqtt://IP-ADRESS:1883`
+
+## Description
+Please fill me with an explanation and useful links
+

generate-param-docs/parameter-docs/MQTT/password.md

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+# Parameter `password`
+Default Value: `PASSWORD`
+
+## Description
+Please fill me with an explanation and useful links
+

generate-param-docs/parameter-docs/MQTT/user.md

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+# Parameter `user`
+Default Value: `USERNAME`
+
+## Description
+Please fill me with an explanation and useful links
+