Add Cuda event and stream API (#32460)
* add cuda event and stream api * add cuda event and stream api * add get_current_stream api * add get_current_stream api * init streams * modify get_current_stream * modify get_cuttent_stream * add synchronize func * add current_stream doc and test file * move get_current_stream into CUDA macro * move CudaEvent into CUDA macro * move _get_current_stream and _device_synchronize into cuda macro * modify the macro of cuda stream and event * add test case for synchronize * add paddle.devices.cuda module * event and stream support hip * add doc for stream and event class * move cuda stream and event into single pybind * add cuda_streams_py.cc to cmakelist * add _device_synchronize and _get_current_stream to core module * add test case for cudastream and cudaevent * move __all__ in streams.py * fix test fail * add cuda to devices __all__ * fix current_stream doc writing error * move devices to device direction, and merge device.py into __init__.py * add required:gpu to sample codes * remove cuda direction from device/__init__.py
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