Initial bluetooth_proxy support (#3736)

esphome/components/bluetooth_proxy/bluetooth_proxy.h

@@ -0,0 +1,26 @@
+#pragma once
+
+#ifdef USE_ESP32
+
+#include <map>
+
+#include "esphome/components/esp32_ble_tracker/esp32_ble_tracker.h"
+#include "esphome/core/automation.h"
+#include "esphome/core/component.h"
+
+namespace esphome {
+namespace bluetooth_proxy {
+
+class BluetoothProxy : public Component, public esp32_ble_tracker::ESPBTDeviceListener {
+ public:
+  bool parse_device(const esp32_ble_tracker::ESPBTDevice &device) override;
+  void dump_config() override;
+
+ protected:
+  void send_api_packet_(const esp32_ble_tracker::ESPBTDevice &device);
+};
+
+}  // namespace bluetooth_proxy
+}  // namespace esphome
+
+#endif  // USE_ESP32