Add EntityBase properties to ESP32 Camera (#2600)

esphome/components/esp32_camera/esp32_camera.cpp

@@ -185,6 +185,7 @@ ESP32Camera::ESP32Camera(const std::string &name) : EntityBase(name) {
 
   global_esp32_camera = this;
 }
+ESP32Camera::ESP32Camera() : ESP32Camera("") {}
 void ESP32Camera::set_data_pins(std::array<uint8_t, 8> pins) {
   this->config_.pin_d0 = pins[0];
   this->config_.pin_d1 = pins[1];