* fix overwrite builtin layer destruction

* make modelbin class copyable

* test++

* pnnx fuse transformer clip attention

* skip fuse mha for 1.8

* select one method other than forward

* pnnx fuse diffusers attentionblock

* force global cpu info initialization

* sanitize zero nT

* pnnx convert sdpa

* pnnx fuse diffuser attention2

* Update benchmark information about Hyper-V Linux Guest with GPU-PV enabled (Intel Core i7-11800H, NVIDIA GeForce RTX 3070 Laptop GPU).

* Update benchmark information about Hyper-V Linux Guest with GPU-PV enabled (Intel Core i7-7700K, NVIDIA GeForce GTX 1050 Ti).

* fix vulkan validation error, prefer VK_KHR_buffer_device_address over VK_EXT_buffer_device_address

* enable validation extension features

* workaround moltenvk error on spec const composite op

* workaround moltenvk crying on binding image with memory offset

* pnnx convert torch std

* fix multiple fuse pass on torch 2.0

* fuse vit pytorch mha pattern

* fix aarch64 build without fp16 conversion intrinsics

* vfpv4 always implies neon

support yolov8s ncnn

fix vulkan validation error, prefer VK_KHR_buffer_device_address over VK_EXT_buffer_device_address (#4680)