[bme68x_bsec2] add id: to allow extending (#12649)

esphome/components/bme68x_bsec2/sensor.py

@@ -50,6 +50,7 @@ TYPES = [
 
 CONFIG_SCHEMA = cv.Schema(
     {
+        cv.GenerateID(): cv.declare_id(cg.Component),
         cv.GenerateID(CONF_BME68X_BSEC2_ID): cv.use_id(BME68xBSEC2Component),
         cv.Optional(CONF_TEMPERATURE): sensor.sensor_schema(
             unit_of_measurement=UNIT_CELSIUS,

tests/components/bme68x_bsec2_i2c/common.yaml

@@ -9,6 +9,7 @@ bme68x_bsec2_i2c:
 
 sensor:
   - platform: bme68x_bsec2
+    id: bme_sensor
     temperature:
       name: BME68X Temperature
     pressure: