additional components, clean-up

custom_components/empty_text_sensor/empty_text_sensor.cpp

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+#include "esphome/core/log.h"
+#include "empty_text_sensor.h"
+
+namespace esphome {
+namespace empty_text_sensor {
+
+static const char *TAG = "empty_text_sensor.text_sensor";
+
+void EmptyTextSensor::setup() {
+  
+}
+
+void EmptyTextSensor::dump_config() { 
+    ESP_LOGCONFIG(TAG, "Empty text sensor");
+}
+
+}  // namespace empty_text_sensor
+}  // namespace esphome

custom_components/empty_text_sensor/empty_text_sensor.h

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+#pragma once
+
+#include "esphome/core/component.h"
+#include "esphome/components/text_sensor/text_sensor.h"
+
+namespace esphome {
+namespace empty_text_sensor {
+
+class EmptyTextSensor : public text_sensor::TextSensor, public Component {
+ public:
+  void setup() override;
+  void dump_config() override;
+};
+
+}  // namespace empty_text_sensor
+}  // namespace esphome

custom_components/empty_text_sensor/text_sensor.py

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+import esphome.codegen as cg
+import esphome.config_validation as cv
+from esphome.components import text_sensor
+from esphome.const import CONF_ID
+
+empty_text_sensor_ns = cg.esphome_ns.namespace('empty_text_sensor')
+EmptyTextSensor = empty_text_sensor_ns.class_('EmptyTextSensor', text_sensor.TextSensor, cg.Component)
+
+CONFIG_SCHEMA = text_sensor.TEXT_SENSOR_SCHEMA.extend({
+    cv.GenerateID(): cv.declare_id(EmptyTextSensor)
+}).extend(cv.COMPONENT_SCHEMA)
+
+
+def to_code(config):
+    var = cg.new_Pvariable(config[CONF_ID])
+    yield text_sensor.register_text_sensor(var, config)
+    yield cg.register_component(var, config)
+