+add AVX-512BW optimizations of class SynetScale16b.

+add AVX2 optimizations of class SynetScale16b.

+add SSE4.1 optimizations of class SynetScale16b (part 3).

+add SSE4.1 optimizations of class SynetScale16b (part 2).

*fix bug in previous commit.

+add SSE4.1 optimizations of class SynetScale16b (part 1).

+add Base implementation of class SynetScale16b.

+add AVX-512BW optimizations of function SynetChannelSum16b.

+add AVX2 optimizations of function SynetChannelSum16b.

+add SSE4.1 optimizations of function SynetChannelSum16b.

*fix bug: Error in classes Xml::NodeIterator, Xml::AttributeIterator.

+add Base implementation of function SynetChannelSum16b.

+add Clang version parameter in Github actions script for CMake (part…

+add Clang version parameter in Github actions script for CMake.

*fix bugs in MergedConvolution16b (output convolution).

*fix bugs: Error in Base implementation, AMX-BF16 optimizations of cl…

*fix bug: Error in Base implementation of class SynetInnerProduct16bG…

*fix bugs in InnerProduct and MergedConvolution (part 1).

Merge pull request #286 from ErniGH/erni/appleclang-error-mfpu

+add AMX-BF16 optimizations of classes SynetMergedConvolution16bCdc, …

+add AMX-BF16 optimizations of classes SynetMergedConvolution16bCdc, …

+add AMX-BF16 optimizations of classes SynetMergedConvolution16bCdc, …

+add AMX-BF16 optimizations of classes SynetMergedConvolution16bCdc, …

*disable too long tests.

+add ForwardSmallNK algorithm in Base implementation of class SynetDe…

+add AMX-BF16 optimizations of class SynetDeconvolution16bNhwcGemm.

*fix bug: Error in Base implementation, SSE4.1, AVX2, AVX-512BW optim…

*RELEASE 6.1.147.

*fix bug in Base::SynetInnerProduct16bGemmNN::SetAlgParam.

*fix bug in AMX optimization of Convolution16bNchwGemm class.