Add sensor setup type hints [r] (#63312)

Co-authored-by: epenet <epenet@users.noreply.github.com>

homeassistant/components/rejseplanen/sensor.py

@@ -4,6 +4,8 @@ Support for Rejseplanen information from rejseplanen.dk.
 For more info on the API see:
 https://help.rejseplanen.dk/hc/en-us/articles/214174465-Rejseplanen-s-API
 """
+from __future__ import annotations
+
 from contextlib import suppress
 from datetime import datetime, timedelta
 import logging
@@ -14,7 +16,10 @@ import voluptuous as vol
 
 from homeassistant.components.sensor import PLATFORM_SCHEMA, SensorEntity
 from homeassistant.const import ATTR_ATTRIBUTION, CONF_NAME, TIME_MINUTES
+from homeassistant.core import HomeAssistant
 import homeassistant.helpers.config_validation as cv
+from homeassistant.helpers.entity_platform import AddEntitiesCallback
+from homeassistant.helpers.typing import ConfigType, DiscoveryInfoType
 import homeassistant.util.dt as dt_util
 
 _LOGGER = logging.getLogger(__name__)
@@ -73,7 +78,12 @@ def due_in_minutes(timestamp):
     return int(diff.total_seconds() // 60)
 
 
-def setup_platform(hass, config, add_devices, discovery_info=None):
+def setup_platform(
+    hass: HomeAssistant,
+    config: ConfigType,
+    add_devices: AddEntitiesCallback,
+    discovery_info: DiscoveryInfoType | None = None,
+) -> None:
     """Set up the Rejseplanen transport sensor."""
     name = config[CONF_NAME]
     stop_id = config[CONF_STOP_ID]