remove inclusion of <intrin.h> from algorithm.h

[virt00l]

Do forward declare all necessary intrinsic funcs in-place to avoid including <intrin.h> as on clang-cl it's includes a lot of headers.

Also enable accelerated intrin code path on arm64 in bitset<>

[virt00l]

Example of includes when building in clang-cl mode:

Note: including file:      ...\EASTL/algorithm.h
Note: including file:       ...\EASTL/internal/copy_help.h
Note: including file:        ...\EASTL/iterator.h
Note: including file:         ...\EASTL/initializer_list.h
Note: including file:         d:\...\include\stddef.h
Note: including file:       ...\EASTL/internal/fill_help.h
Note: including file:        d:\...\include\intrin.h
Note: including file:         d:\...\include\x86intrin.h
Note: including file:          d:\...\include\ia32intrin.h
Note: including file:          d:\...\include\immintrin.h
Note: including file:           d:\...\include\x86gprintrin.h
Note: including file:            d:\...\include\hresetintrin.h
Note: including file:            d:\...\include\uintrintrin.h
Note: including file:            d:\...\include\crc32intrin.h
Note: including file:           d:\...\include\mmintrin.h
Note: including file:           d:\...\include\xmmintrin.h
Note: including file:            d:\...\include\mm_malloc.h
Note: including file:             d:\...\include/10.0.19041.0/ucrt\malloc.h
Note: including file:            d:\...\include\emmintrin.h
Note: including file:             d:\...\include\xmmintrin.h
Note: including file:           d:\...\include\pmmintrin.h
Note: including file:           d:\...\include\tmmintrin.h
Note: including file:           d:\...\include\smmintrin.h
Note: including file:            d:\...\include\popcntintrin.h
Note: including file:           d:\...\include\wmmintrin.h
Note: including file:            d:\...\include\__wmmintrin_aes.h
Note: including file:            d:\...\include\__wmmintrin_pclmul.h
Note: including file:           d:\...\include\clflushoptintrin.h
Note: including file:           d:\...\include\clwbintrin.h
Note: including file:           d:\...\include\avxintrin.h
Note: including file:           d:\...\include\avx2intrin.h
Note: including file:           d:\...\include\f16cintrin.h
Note: including file:           d:\...\include\bmiintrin.h
Note: including file:           d:\...\include\bmi2intrin.h
Note: including file:           d:\...\include\lzcntintrin.h
Note: including file:           d:\...\include\fmaintrin.h
Note: including file:           d:\...\include\avx512fintrin.h
Note: including file:           d:\...\include\avx512vlintrin.h
Note: including file:           d:\...\include\avx512bwintrin.h
Note: including file:           d:\...\include\avx512bitalgintrin.h
Note: including file:           d:\...\include\avx512cdintrin.h
Note: including file:           d:\...\include\avx512vpopcntdqintrin.h
Note: including file:           d:\...\include\avx512vpopcntdqvlintrin.h
Note: including file:           d:\...\include\avx512vnniintrin.h
Note: including file:           d:\...\include\avx512vlvnniintrin.h
Note: including file:           d:\...\include\avxvnniintrin.h
Note: including file:           d:\...\include\avx512dqintrin.h
Note: including file:           d:\...\include\avx512vlbitalgintrin.h
Note: including file:           d:\...\include\avx512vlbwintrin.h
Note: including file:           d:\...\include\avx512vlcdintrin.h
Note: including file:           d:\...\include\avx512vldqintrin.h
Note: including file:           d:\...\include\avx512erintrin.h
Note: including file:           d:\...\include\avx512ifmaintrin.h
Note: including file:           d:\...\include\avx512ifmavlintrin.h
Note: including file:           d:\...\include\avx512vbmiintrin.h
Note: including file:           d:\...\include\avx512vbmivlintrin.h
Note: including file:           d:\...\include\avx512vbmi2intrin.h
Note: including file:           d:\...\include\avx512vlvbmi2intrin.h
Note: including file:           d:\...\include\avx512pfintrin.h
Note: including file:           d:\...\include\avx512bf16intrin.h
Note: including file:           d:\...\include\avx512vlbf16intrin.h
Note: including file:           d:\...\include\pkuintrin.h
Note: including file:           d:\...\include\vpclmulqdqintrin.h
Note: including file:           d:\...\include\vaesintrin.h
Note: including file:           d:\...\include\gfniintrin.h
Note: including file:           d:\...\include\rtmintrin.h
Note: including file:           d:\...\include\xtestintrin.h
Note: including file:           d:\...\include\shaintrin.h
Note: including file:           d:\...\include\fxsrintrin.h
Note: including file:           d:\...\include\xsaveintrin.h
Note: including file:           d:\...\include\xsaveoptintrin.h
Note: including file:           d:\...\include\xsavecintrin.h
Note: including file:           d:\...\include\xsavesintrin.h
Note: including file:           d:\...\include\cetintrin.h
Note: including file:           d:\...\include\adxintrin.h
Note: including file:           d:\...\include\rdseedintrin.h
Note: including file:           d:\...\include\wbnoinvdintrin.h
Note: including file:           d:\...\include\cldemoteintrin.h
Note: including file:           d:\...\include\waitpkgintrin.h
Note: including file:           d:\...\include\movdirintrin.h
Note: including file:           d:\...\include\pconfigintrin.h
Note: including file:           d:\...\include\sgxintrin.h
Note: including file:           d:\...\include\ptwriteintrin.h
Note: including file:           d:\...\include\invpcidintrin.h
Note: including file:           d:\...\include\keylockerintrin.h
Note: including file:           d:\...\include\amxintrin.h
Note: including file:           d:\...\include\avx512vp2intersectintrin.h
Note: including file:           d:\...\include\avx512vlvp2intersectintrin.h
Note: including file:           d:\...\include\enqcmdintrin.h
Note: including file:           d:\...\include\serializeintrin.h
Note: including file:           d:\...\include\tsxldtrkintrin.h
Note: including file:          d:\...\include\mm3dnow.h
Note: including file:           d:\...\include\prfchwintrin.h
Note: including file:          d:\...\include\prfchwintrin.h
Note: including file:          d:\...\include\ammintrin.h
Note: including file:          d:\...\include\fma4intrin.h
Note: including file:          d:\...\include\xopintrin.h
Note: including file:           d:\...\include\fma4intrin.h
Note: including file:          d:\...\include\tbmintrin.h
Note: including file:          d:\...\include\lwpintrin.h
Note: including file:          d:\...\include\mwaitxintrin.h
Note: including file:          d:\...\include\clzerointrin.h
Note: including file:          d:\...\include\rdpruintrin.h