rocFFT 1.0.23 for ROCm 5.6.0

Added

• Implemented half-precision transforms, which can be requested by passing rocfft_precision_half to rocfft_plan_create.
• Implemented a hierarchical solution map which saves how to decompose a problem and the kernels to be used.
• Implemented a first version of offline-tuner to support tuning kernels for C2C/Z2Z problems.

Changed

• Replaced std::complex with hipComplex data types for data generator.
• FFT plan dimensions are now sorted to be row-major internally where possible, which produces better plans if the dimensions were accidentally specified in a different order (column-major, for example).
• Added --precision argument to benchmark/test clients. --double is still accepted but is deprecated as a method to request a double-precision transform.

Fixed

• Fixed over-allocation of LDS in some real-complex kernels, which was resulting in kernel launch failure.