feat(liconic): add StoreX driver and gRPC service

[rickwierenga]

Summary

• add a PyLabRobot StoreX resource and LiCONiC serial driver with rack helpers
• add an experimental ownership-aware gRPC service for inventory and tray transfers
• expose active initialize, store, and fetch operations through GetState
• add a shared distributed extra for compatible grpcio and protobuf runtimes; compose it into sila and liconic-server
• document setup, safety boundaries, and device-registry support

Validation

• 37 StoreX and gRPC tests passed
• device-registry tests passed, including 416 subtests
• repository-wide Ruff lint and format checks passed
• repository-wide mypy passed for 735 source files
• Sphinx warning-as-error documentation build passed
• example notebook structure and cleared outputs validated
• optional-dependency metadata and PEP 508 requirements validated

The server keeps inventory in memory and its gRPC transport is currently unauthenticated and unencrypted; both limitations are called out in the documentation.