feat(plugins): isolate device integrations

tests/test_foxglove_bridge.py

@@ -2,14 +2,14 @@ from __future__ import annotations
 
 import struct
 
-from k1link.protocol.streams import (
+from k1link.device_plugins.xgrids_k1.protocol.streams import (
     LegacyPoint,
     LegacyPointCloudFrame,
     LioPoint,
     LioPointCloudFrame,
     MqttHeader,
 )
-from k1link.viewer.foxglove_bridge import (
+from k1link.device_plugins.xgrids_k1.viewer.foxglove_bridge import (
     POINT_STRIDE,
     BridgeMetrics,
     pack_legacy_point_cloud,