Add Adalight support (#956)

A component to support [Adalight](https://learn.adafruit.com/adalight-diy-ambient-tv-lighting).
This allows to control addressable LEDs over UART, by pushing data right into LEDs.

The most useful to use [Prismatik](https://github.com/psieg/Lightpack) to create
an immersive effect on PC.

Co-authored-by: Guillermo Ruffino <glm.net@gmail.com>

tests/test1.yaml

@@ -128,14 +128,20 @@ spi:
   miso_pin: GPIO23
 
 uart:
-  tx_pin: GPIO22
-  rx_pin: GPIO23
-  baud_rate: 115200
-  id: uart0
-  parity: NONE
-  data_bits: 8
-  stop_bits: 1
-  rx_buffer_size: 512
+  - tx_pin: GPIO22
+    rx_pin: GPIO23
+    baud_rate: 115200
+    id: uart0
+    parity: NONE
+    data_bits: 8
+    stop_bits: 1
+    rx_buffer_size: 512
+
+  - id: adalight_uart
+    tx_pin: GPIO25
+    rx_pin: GPIO26
+    baud_rate: 115200
+    rx_buffer_size: 1024
 
 ota:
   safe_mode: True
@@ -179,6 +185,8 @@ as3935_spi:
   cs_pin: GPIO12
   irq_pin: GPIO13
 
+adalight:
+
 sensor:
   - platform: adc
     pin: A0
@@ -1177,6 +1185,8 @@ light:
             if (initial_run) {
               it[0] = current_color;
             }
+    - adalight:
+        uart_id: adalight_uart
     - automation:
         name: Custom Effect
         sequence: