Add Solar-Log integration docs (#10473)

* Add Solar-Log docs

* fix suggested changes

* Remove of scan interval configuration option

* ✏️ Tweak

* ✏️ Tweak

* ✏️ Tweak

* Update due to component changes

Added the option to use configuration in the user interface.
Removed the requirement to not have http:// in the host address (will be automatically added now if not provided).

* ✏️ Tweaks


Co-authored-by: Klaas Schoute <klaas_schoute@hotmail.com>
Co-authored-by: Franck Nijhof <frenck@frenck.nl>

source/_components/solarlog.markdown

@@ -0,0 +1,103 @@
+---
+title: "Solar-Log Sensor"
+description: "Instructions on how to integrate Solar-Log sensors within Home Assistant."
+logo: solar-log.png
+ha_category: Sensor
+ha_release: 0.101
+ha_iot_class: Local Polling
+---
+
+The `solarlog` integration uses the open JSON interface on Solar-Log PV monitoring systems to allow you to get details from your Solar-Log device and integrate these into your Home Assistant installation.
+
+Before being able to use the integration, you have to activate the open JSON interface on your Solar-Log device. This can be activated from the Configuration | System | Access control menu of your Solar-Log device. 
+When activating the interface, a red warning triangle with security information and risks is displayed.
+
+The `solarlog` integration uses the default host address "http://solar-log" if you don't specify a host. If your device isn't accessible on this address, use its IP Address instead.
+
+<div class='note warning'>
+The open JSON interface is deactivated by default. To activate the open JSON interface, a user password must first be set. The password isn't needed for accessing the open JSON interface.
+</div>
+
+## Configuration
+
+There are 2 options in configuring the `solarlog` integration:
+
+- Via the Home Assistant user interface where it will let you enter the name and host to connect to your Solar-Log device.
+- Via the Home Assistant `configuration.yaml` file.
+
+```yaml
+# Example configuration.yaml entry
+sensor:
+  platform: solarlog
+```
+
+{% configuration %}
+host:
+  description: The IP Address or host address of your Solar-Log device.
+  required: false
+  default: http://solar-log
+  type: string
+name:
+  description: Let you overwrite the name of the device in the frontend.
+  required: false
+  default: solarlog
+  type: string
+{% endconfiguration %}
+
+### Full configuration sample
+
+A full configuration entry would look like the sample below.
+
+```yaml
+# Example configuration.yaml entry
+sensor:
+  - platform: solarlog
+    name: solarlog
+    host: 192.168.1.123
+```
+
+In case you would like to convert the values, for example, to Wh instead of the default kWh, you can use the [template platform](/integrations/template/).
+
+{% raw %}
+```yaml
+# Example configuration.yaml entry for sensor template platform
+sensor:
+  - platform: template
+    sensors:
+      solarlog_yield_day_template:
+        value_template: "{{ (states('sensor.solarlog_yield_day') | float * 1000) | round(0) }}"
+```
+{% endraw %}
+
+## Sensors
+
+The following sensors are available in the library:
+
+| name                  | Unit   | Description   |
+|-----------------------|--------|:-------------------------------------------|
+| last_update           |        | Time of latest data update.                |
+| power_ac              | W      | Total output PAC from all of the inverters and meters in inverter mode. |
+| power_dc              | W      | Total output PAC from all of the inverters. |
+| voltage_ac            | V      | Average voltage AC from the inverter. |
+| voltage_dc            | V      | Average voltage DC from the inverter |
+| yield_day             | kWh    | Total yield for the day from all of the inverters |
+| yield_yesterday       | kWh    | Total yield for the previous day from all of the inverters. |
+| yield_month           | kWh    | Total yield for the month from all of the inverters. |
+| yield_year            | kWh    | Total yield for the year from all of the inverters. |
+| yield_total           | kWh    | Total yield from all of the inverters. |
+| consumption_ac        | kWh    | Current total consumption AC from all of the consumption meters. |
+| consumption_day       | kWh    | Total consumption for the day from all of the consumption meters. |
+| consumption_yesterday | kWh    | Total consumption for the previous day from all of the consumption meters. |
+| consumption_month     | kWh    | Total consumption for the month from all of the consumption meters. |
+| consumption_year      | kWh    | Total consumption for the year from all of the consumption meters. |
+| consumption_total     | kWh    | Accumulated total consumption from all consumption meters. |
+| total_power           | Wp     | Installed generator power. |
+| alternator_loss       | W      | Altenator loss (equals to power_dc - power_ac) |
+| capacity              | %      | Capacity (equals to power_dc / total power) |
+| efficiency            | % W/Wp | Efficiency (equals to power_ac / power_dc |
+| power_available       | W      | Available power (equals to power_ac - consumption_ac) | 
+| usage                 |        | Usage (equals to consumption_ac / power_ac) |
+
+<div class='note'>
+The solarlog integration is using the sunwatcher pypi package to get the data from your Solar-Log device. The last five sensors are not reported by your Solar-Log device directly, but are computed by the sunwatcher package.
+</div>