ads1115: remove auto-load and split sensor into platform folder (#5981)

esphome/components/ads1115/sensor/ads1115_sensor.h

@@ -0,0 +1,35 @@
+#pragma once
+
+#include "esphome/core/component.h"
+#include "esphome/core/helpers.h"
+
+#include "esphome/components/sensor/sensor.h"
+#include "esphome/components/voltage_sampler/voltage_sampler.h"
+
+#include "../ads1115.h"
+
+namespace esphome {
+namespace ads1115 {
+
+/// Internal holder class that is in instance of Sensor so that the hub can create individual sensors.
+class ADS1115Sensor : public sensor::Sensor,
+                      public PollingComponent,
+                      public voltage_sampler::VoltageSampler,
+                      public Parented<ADS1115Component> {
+ public:
+  void update() override;
+  void set_multiplexer(ADS1115Multiplexer multiplexer) { this->multiplexer_ = multiplexer; }
+  void set_gain(ADS1115Gain gain) { this->gain_ = gain; }
+  void set_resolution(ADS1115Resolution resolution) { this->resolution_ = resolution; }
+  float sample() override;
+
+  void dump_config() override;
+
+ protected:
+  ADS1115Multiplexer multiplexer_;
+  ADS1115Gain gain_;
+  ADS1115Resolution resolution_;
+};
+
+}  // namespace ads1115
+}  // namespace esphome