When performing destroy_gpu_instance(), g_instance.created is always 0.

* destroy_gpu_instance() will internally ensure that all vulkan devices are idle before proceeding with destruction.

* Fix `destroy_gpu_instance` crash

* Additional check and clear

* create layer decoupled
* no more virtual public
* allow build test with shared library
* decouple cpu vulkan
* drop old scripts

* vulkan-driver-loader.md
* static vulkan on apple

* complete abs, fmod and sin function in simplemath.h

* remove some unused variables in simplemath.cpp

* modify test-coverage.yml and add some functions to simplemath.cpp

* modify erf.cpp which included math.h

* include platform.h for NCNN_SIMPLEMATH definition

* move utility constants and functions in simplemath.h to simplemath.cpp

* guard simplemath functions with extern "C"

* add NCNN_EXPORT macro in simplemath.h

* include plateform.h and guard all declarations with NCNN_SIMPLEMATH

* clean unused code in test_unaryop.cpp

* guard #include <vector> with NCNN_SIMPLEMATH in benchncnn.cpp

* add 'static' to guard functions that not declarated in header file

* modify sin and cos with better implementation

---------

Co-authored-by: HonestDeng <HonestDeng@users.noreply.github.com>

* enable VK_KHR_cooperative_matrix
* add khr cm shader
* update glslang
* print matrix info

* fix vulkan validation error, prefer VK_KHR_buffer_device_address over VK_EXT_buffer_device_address

* enable validation extension features

* Add some extension capability for vma

* enable VK_KHR_portability_subset extension if device support it

Co-authored-by: w1ndseeker <w1ndseeker@users.noreply.github.com>

* query and enable cooperative matrix

* fix build with old vulkan sdk

* implement cooperative matrix optimization

* add nvidia-t4 coverage

* adjust test option for more coverage

* implicit gemm

* unroll direct conv by 2x2x2

* vulkan local memory optimization for conv1x1 pack4 and winograd on dgpu

* unified innerproduct pipeline creation

* reorder deconvolution weight layout

* flexible local memory data type

* more local memory optimization for conv/deconv gemm

* add bridge image for adreno image storage upload and download

* enable sbn1, print bugbilz flag

* blacklist old adreno

* let user choose use_image_storage option even when bug_storage_buffer_no_l1

* 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

* enable ios arm64e

* fix build with old vulkan sdk

* link vulkan loader on macos, fix ios moltenvk library path

* there is no moltenvk arm64e library atm, link moltenvk directly for macos-arm64

* drop bug_layout_binding_id_alias flag

* reset

* fix build with old vulkan header

* query subgroup features

* compile spirv 1.3

* drop offline spirv build

* do not build tests for android and ios, as they are never tested anyway

* code style