[C++] Create registry for Devices to map DeviceType to MemoryManager in C Device Data import #40698
Description
Describe the enhancement requested
Follow-up on #39980 (comment)
Right now, the user of ImportDeviceArray or ImportDeviceRecordBatch needs to provide a DeviceMemoryMapper mapping the device type and id to a MemoryManager. We provide a default implementation of that mapper that just knows about the default CPU memory manager (and there is another implementation in arrow::cuda, but you need to explicitly pass that to the import function)
To make this easier, the suggestion was to create a registry such that default device mappers can be added separately.
Component(s)
C++