VDF750 Configurator 2.6.0

Added dual-drive monitoring for CANlink Master/Slave commissioning:
- Master = drive selected in the main Modbus connection bar.
- Slave = second Modbus address entered on the Online Monitoring tab.
- One RS-485 COM port can poll both drives when both RS-485 interfaces are wired on the same bus and have unique PD-02 addresses.
- Both drives are sampled in one acquisition cycle.
- Overlay charts for frequency, current, DC-bus voltage and output power.
- One CSV log stores both drives with a common timestamp and CycleMs.
- Base online values: frequency, reference, DC bus, output voltage/current/power/torque, state and fault.
- Optional CANlink point-to-point telemetry: U0-63 transmitted value and U0-64 received value. If unsupported by the VDF750 firmware, base monitoring continues.
- Added Modbus client support for polling an explicit slave address without reopening the COM port.
- UI additions translated into Russian, English and Chinese.

Note: CANlink between the drives and RS-485 monitoring from the PC are separate physical communication links.
