advertise esc_status where is publishes

- esc_status is an optional logging topic resulting in it not being
logged if it doesn't get advertise -> Add advertise where applicable

src/drivers/actuators/modal_io/modal_io.cpp

@@ -75,6 +75,8 @@ ModalIo::ModalIo() :
 		_esc_status.esc[i].esc_power       = 0;
 	}
 
+	_esc_status_pub.advertise();
+
 	qc_esc_packet_init(&_fb_packet);
 	qc_esc_packet_init(&_uart_bridge_packet);
 

src/drivers/tap_esc/TAP_ESC.cpp

@@ -65,6 +65,8 @@ int TAP_ESC::init()
 		return ret;
 	}
 
+	_esc_feedback_pub.advertise();
+
 	/* Respect boot time required by the ESC FW */
 	hrt_abstime uptime_us = hrt_absolute_time();
 

src/drivers/uavcan/actuators/esc.cpp

@@ -64,6 +64,8 @@ UavcanEscController::init()
 		return res;
 	}
 
+	_esc_status_pub.advertise();
+
 	return res;
 }