* zfh zvfh xtheadvector infra
* dispatch for rvv and xtheadvector
* dispatch for non-vector zfh
* port xtheadvector recp rsqrt trunc
* general rvv gemm
* c906 and c910 ci
* old tuple code clean
* update riscv64 ci
* update build doc
* drop old th1520 toolchain

* new api for detecting arm midr and a53 a55 arch info wrapper

* let a35 be a53 :P

* a53 bf16s

* detect running core

* get cpu l2 cache size and resolve gemm tile size

* optimize constant tile K

* fix per-core l2 cache detection, better macos cpu cluster topology discovery

* get_physical_cpu_count api family

* set default to physical big cpu

* always treat smt core as big core

* is_smt_cpu

* get max freq mhz on windows

* windows thread affinity

* feat: add denormal options

Flush-To-Zero(FTZ) and Denormals-Are-Zero(DAZ) are modes that bypass IEEE754 methods of dealing with denormal floating-point numbers on x86_64 and some x86 CPUs.

* feat: Integrate `flush_denormals` into `Extractor::extract`

* chore: replace global variable with `ThreadLocalStorage`

* build shared lib and enable lto

* reserved for layer and option

* allocator pimpl

* datareader pimpl

* paramdict pimpl, disable copy assign for allocator and datareader

* modelbin pimpl

* net extractor pimpl

* gpu pimple

* disable copy assign vulkandevice, code format

* command pimpl, dummy image readonly

* pipeline pipelinecache pimpl, export platform class

* code format, export simple family

* update ci

* disable lto on android armv7, merge webassembly ci

* link libgcc, fix macos dylib version

* pipeline pimpl, gpu info pimpl

* destroy gpu info after vulkan device

* ignore msvc stl class warning

* fix ncnn_paramdict_get_float return type

* fix vktransfer upload fp16 without flatten, add command test

* recognize apple M1

* macos ios cpuset and thread affinity

* big little cpu topology for macos and ios

* silence affinity not supported error

Co-authored-by: nihui <shuizhuyuanluo@126.com>