* helper function for selecting the optimal coopmat mnk size

- synchronize the latest English content to the Chinese documentation
- correct spelling errors in the English version of glsl-extention
- Fix spelling 'enable_validation_layer' in src/gpu.cpp

* add int8 definitions
* packing vulkan int8/int32, quantize vulkan
* vulkan dequantize
* requantize vulkan

* fix pyncnn build

vkimagemat was originally used as a mat storage in the hope of improving performance on old adreno gpus, but in fact it is slower than the cpu in most cases and is no longer suitable for the latest adreno architecture and large shapes

glsl has no string type anyway

* NCNN_LOGE in glsl

* Update glsl-extension.md

* check image fp16

* clean vulkan shader common extension

* macro suffix makes glslang unhappy

ref https://gitlab.freedesktop.org/mesa/mesa/-/issues/10847

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