Add max_distance option

Closes #1

components/esp32_nimble_mqtt_room/__init__.py

@@ -12,8 +12,8 @@ CONF_NIMBLE_ID = "esp32_nimble_mqtt_room"
 
 CONF_ROOM_KEY = 'room'
 CONF_BASE_TOPIC_KEY = 'base_topic'
-# CONF_MY_OPTIONAL_KEY = 'my_optional_key'
 CONF_MAC_KEY = 'mac_addr'
+CONF_MAX_DISTANCE = 'max_distance'
 
 esp32_nimble_tracker_ns = cg.esphome_ns.namespace("esp32_nimble_mqtt_room")
 ESP32NimbleMQTTRoom = esp32_nimble_tracker_ns.class_(
@@ -24,6 +24,7 @@ CONFIG_SCHEMA = cv.Schema({
   cv.GenerateID(): cv.declare_id(ESP32NimbleMQTTRoom),
   cv.Required(CONF_ROOM_KEY): cv.string,
   cv.Required(CONF_MAC_KEY): cv.All(cv.ensure_list(cv.string)),
+  cv.Optional(CONF_MAX_DISTANCE, default=16.0): cv.float_,
   cv.Optional(CONF_BASE_TOPIC_KEY, default="esphome_presense"): cv.string,
 }).extend(cv.COMPONENT_SCHEMA).extend(nimble_tracker.NIMBLE_DEVICE_LISTENER_SCHEMA)
 
@@ -34,6 +35,7 @@ async def to_code(config):
   cg.add(var.set_room(config[CONF_ROOM_KEY]))
   cg.add(var.set_base_topic(config[CONF_BASE_TOPIC_KEY]))
   cg.add(var.set_addresses(config[CONF_MAC_KEY]))
+  cg.add(var.set_max_distance(config[CONF_MAX_DISTANCE]))
 
   await nimble_tracker.device_listener_to_code(var, config)
   await nimble_tracker.register_ble_device(var, config)