resolve reclaim_blob_allocator get wild allocator warning when clear() called multple times

* skip dynamic tensor index

* handle clone oom

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

* cmake check compiler test cannot be optimized out
* drop requant pack4

* restrict one dim quantize scale size

* sse2 requantize pack8

* remove dequantize pack8 test, seems to be useless