Add Ion ModuleStatus vendor message

[joop7109-creator]

Summary

This pull request adds the following Ion Controls vendor-specific DroneCAN data type:

• 20540 ion.ModuleStatus

The message reports the module supply voltage, operating state, and elapsed timer value.

Vendor message-ID request

Ion Controls Ltd would also like to request the following vendor-specific message-ID allocation:

• 20540–20549, inclusive

ID 20540 is assigned by this pull request to ion.ModuleStatus.

IDs 20541–20549 are requested for future Ion Controls vendor-specific DroneCAN messages. No placeholder DSDL definitions have been created for these unused IDs.

Please could the maintainers confirm whether the complete 20540–20549 block can be recognised as reserved for Ion Controls Ltd.

Thank you.

Testing

The ion.ModuleStatus definition has been successfully compiled using dronecan_dsdlc and is in use on an STM32H7 DroneCAN node.