add support for EZO sensor circuits (#1239)

Co-authored-by: Samuel Sieb <samuel@sieb.net>

tests/test1.yaml

@@ -784,6 +784,10 @@ sensor:
   - platform: mcp9808
     name: "MCP9808 Temperature"
     update_interval: 15s
+  - platform: ezo
+    id: ph_ezo
+    address: 99
+    unit_of_measurement: "pH"
 
 esp32_touch:
   setup_mode: False

tests/test3.yaml

@@ -421,6 +421,10 @@ sensor:
       name: "CSE7766 Current"
     power:
       name: "CSE776 Power"
+  - platform: ezo
+    id: ph_ezo
+    address: 99
+    unit_of_measurement: "pH"
 
 time:
 - platform: homeassistant