Add TPZRCO2HT-Z3 homeassistant mapping (#4155)

Co-authored-by: Koen Kanters <koenkanters94@gmail.com>

lib/extension/homeassistant.js

@@ -509,6 +509,15 @@ const cfg = {
             icon: 'mdi:rotate-3d-variant',
         },
     },
+    'sensor_co2': {
+        type: 'sensor',
+        object_id: 'co2',
+        discovery_payload: {
+            unit_of_measurement: 'ppm',
+            value_template: '{{ value_json.co2 }}',
+            icon: 'mdi:molecule-co2',
+        },
+    },
 
     // Light
     'light_brightness_colortemp_colorxy': {
@@ -1892,6 +1901,7 @@ const mapping = {
     'GWA1521': [cfg.switch],
     'GWA1522': [switchEndpoint('l1'), switchEndpoint('l2')],
     'GWA1531': [cfg.cover_position],
+    'TPZRCO2HT-Z3': [cfg.sensor_temperature, cfg.sensor_humidity, cfg.sensor_battery, cfg.sensor_co2],
 };
 
 const defaultStatusTopic = 'homeassistant/status';