Ophyd async v0.19.3

[Bilchreis]

Migrate to ophyd-async 0.19.3

Bumps the ophyd-async dependency bound from >=0.13.1,<=0.18 to >0.18,<=0.19.3 and adapts secop-ophyd to the new device/command/movable APIs introduced in that range.

Command devices

• Replaces the hand-rolled SECoPCMDDevice (arg/result Signals + a SignalX trigger) with ophyd-async's native Command / TriggerableCommand device backends.
• Adds SECoPCommandBackend (SECoPSignal.py) and wires it into DeviceFiller via a command_backend_factory, so commands are filled through create_commands_from_annotations alongside signals and sub-devices.
• build_command_signature() (util.py) builds the call signature for a SECoP command from its CommandType datatype: struct arguments are unraveled into keyword-only parameters, non-struct arguments become a single positional-or-keyword arg, and a trailing wait_for_idle: bool = False is always appended.
• stop is intentionally excluded from auto-generated command devices, since SECoPMoveableDevice already implements Stoppable.stop() and a raw command device at the same name would silently shadow it.

Movable devices

• Rewrites SECoPMoveableDevice on top of the new StandardMovable[Any] / MovableLogic[Any], replacing the old Locatable/Stoppable implementation.
• Adds SECoPMovableLogic, which treats a move as complete once the module's status leaves BUSY and enters the IDLE range (rather than waiting for readback == setpoint).
• Pins _mock_class = DeviceMock on SECoPMoveableDevice since StandardMovable's default InstantMovableMock would otherwise install its own mock put-callback on target, conflicting with this project's SECoPBackend mock machinery.

Enum handling

• Adds secop_enum_name_to_python() and dynamic StrictEnum class generation (util.py) so SECoP enum member names (e.g. "Low Energy", "high-power") are consistently mapped to valid Python identifiers.
• Unifies enum handling between pure runtime introspection (_dynamic_enum_class) and codegen'd device classes, reusing a concrete generated StrictEnum subclass from an annotated Command[[ArgT], ResT] signature when one is already available instead of building a duplicate.

Other fixes

• Fixes a set_name cascade bug in SECoPDevices.py so names propagate correctly to child signals/devices.
• Removes the plan-generation code path from GenNodeCode.py and its template/tests — no longer needed with the new command device model.
• Updates uv.lock for the new ophyd-async version range.

Testing

• Updates tests/test_Node.py, tests/test_commands.py, and tests/test_classgen.py to cover the new command backend, movable logic, and enum generation behavior.
• check pre-commit hook in nodebook