init commit from esp-idf ble example

main/include/gatt_svc.h

@@ -0,0 +1,18 @@
+#ifndef GATT_SVR_H
+#define GATT_SVR_H
+
+/* Includes */
+/* NimBLE GATT APIs */
+#include "host/ble_gatt.h"
+#include "services/gatt/ble_svc_gatt.h"
+
+/* NimBLE GAP APIs */
+#include "host/ble_gap.h"
+
+/* Public function declarations */
+void send_heart_rate_indication(void);
+void gatt_svr_register_cb(struct ble_gatt_register_ctxt *ctxt, void *arg);
+void gatt_svr_subscribe_cb(struct ble_gap_event *event);
+int gatt_svc_init(void);
+
+#endif // GATT_SVR_H