Use global imports for ESPHome (#24158)

* Use global import for ESPHome

* Add aioesphomeapi to test requirements

aioesphomeapi is also shipped as a pure-python wheel, so this should not impact test install time

homeassistant/components/esphome/camera.py

@@ -1,17 +1,16 @@
 """Support for ESPHome cameras."""
 import asyncio
 import logging
-from typing import Optional, TYPE_CHECKING
+from typing import Optional
+
+from aioesphomeapi import CameraInfo, CameraState
 
 from homeassistant.components import camera
 from homeassistant.components.camera import Camera
 from homeassistant.config_entries import ConfigEntry
 from homeassistant.helpers.typing import HomeAssistantType
-from . import EsphomeEntity, platform_async_setup_entry
 
-if TYPE_CHECKING:
-    # pylint: disable=unused-import
-    from aioesphomeapi import CameraInfo, CameraState  # noqa
+from . import EsphomeEntity, platform_async_setup_entry
 
 _LOGGER = logging.getLogger(__name__)
 
@@ -19,9 +18,6 @@ _LOGGER = logging.getLogger(__name__)
 async def async_setup_entry(hass: HomeAssistantType,
                             entry: ConfigEntry, async_add_entities) -> None:
     """Set up esphome cameras based on a config entry."""
-    # pylint: disable=redefined-outer-name
-    from aioesphomeapi import CameraInfo, CameraState  # noqa
-
     await platform_async_setup_entry(
         hass, entry, async_add_entities,
         component_key='camera',
@@ -40,11 +36,11 @@ class EsphomeCamera(Camera, EsphomeEntity):
         self._image_cond = asyncio.Condition()
 
     @property
-    def _static_info(self) -> 'CameraInfo':
+    def _static_info(self) -> CameraInfo:
         return super()._static_info
 
     @property
-    def _state(self) -> Optional['CameraState']:
+    def _state(self) -> Optional[CameraState]:
         return super()._state
 
     async def _on_update(self) -> None: