Activate some clang-tidy checks (#1884)

esphome/components/text_sensor/text_sensor.cpp

@@ -9,7 +9,7 @@ static const char *TAG = "text_sensor";
 TextSensor::TextSensor() : TextSensor("") {}
 TextSensor::TextSensor(const std::string &name) : Nameable(name) {}
 
-void TextSensor::publish_state(std::string state) {
+void TextSensor::publish_state(const std::string &state) {
   this->state = state;
   this->has_state_ = true;
   ESP_LOGD(TAG, "'%s': Sending state '%s'", this->name_.c_str(), state.c_str());