Add AM2315C docs (#3625)

Co-authored-by: Jonathan Swoboda <jonathan.swoboda>
Co-authored-by: Jesse Hills <3060199+jesserockz@users.noreply.github.com>

components/sensor/am2315c.rst

@@ -0,0 +1,54 @@
+AM2315C Temperature+Humidity Sensor
+===================================
+
+.. seo::
+    :description: Instructions for setting up AM2315C temperature and humidity sensors
+    :image: am2315c.jpg
+    :keywords: am2315c
+
+The ``am2315c`` Temperature+Humidity sensor allows you to use your AM2315C
+(`datasheet <https://cdn-shop.adafruit.com/product-files/5182/5182_AM2315C.pdf>`__) I²C-based sensor with ESPHome.
+
+.. figure:: images/am2315c-full.jpg
+    :align: center
+    :width: 50.0%
+
+    AM2315C Temperature & Humidity Sensor.
+
+.. figure:: images/temperature-humidity.png
+    :align: center
+    :width: 80.0%
+
+.. code-block:: yaml
+
+    # Example configuration entry
+    sensor:
+      - platform: am2315c
+        temperature:
+          name: "Living Room Temperature"
+        humidity:
+          name: "Living Room Humidity"
+
+Configuration variables:
+------------------------
+
+- **temperature** (**Optional**): The temperature sensor.
+  All options from :ref:`Sensor <config-sensor>`.
+
+- **humidity** (**Optional**): The humidity sensor.
+  All options from :ref:`Sensor <config-sensor>`.
+
+- **update_interval** (*Optional*, :ref:`config-time`): The interval to check the sensor. Defaults to ``60s``.
+
+
+See Also
+--------
+
+- :ref:`sensor-filters`
+- :doc:`absolute_humidity`
+- :doc:`dht`
+- :doc:`dht12`
+- :doc:`hdc1080`
+- :doc:`htu21d`
+- :apiref:`am2315c/am2315c.h`
+- :ghedit:`Edit`

index.rst

@@ -300,6 +300,7 @@ Environmental
     Absolute Humidity, components/sensor/absolute_humidity, water-drop.svg, dark-invert
     AHT10 / AHT20 / AHT21 / DHT20, components/sensor/aht10, aht10.jpg, Temperature & Humidity
     AirThings BLE, components/sensor/airthings_ble, airthings_logo.png, Temperature & Humidity & Pressure
+    AM2315C, components/sensor/am2315c, am2315c.jpg, Temperature & Humidity
     AM2320, components/sensor/am2320, am2320.jpg, Temperature & Humidity
     BME280, components/sensor/bme280, bme280.jpg, Temperature & Humidity & Pressure
     BME680, components/sensor/bme680, bme680.jpg, Temperature & Humidity & Pressure & Gas