Support mac platform static library compilation

[Baiyuetribe]

修复mac设备编译vulkan静态库时缺少相关依赖的问题

Undefined symbols for architecture arm64:
  "_CACurrentMediaTime", referenced from:
      MVKSwapchain::recordPresentTime(MVKImagePresentInfo const&, unsigned long long) in libMoltenVK.a(libMoltenVK.a-arm64-master.o)
Undefined symbols for architecture arm64:
  "_CACurrentMediaTime", referenced from:
      MVKSwapchain::recordPresentTime(MVKImagePresentInfo const&, unsigned long long) in libMoltenVK.a(libMoltenVK.a-arm64-master.o)
  "_CFArrayAppendValue", referenced from:
      MVKImage::useIOSurface(__IOSurface*) in libMoltenVK.a(libMoltenVK.a-arm64-master.o)
Undefined symbols for architecture arm64:
  "_CACurrentMediaTime", referenced from:
Undefined symbols for architecture arm64:
  "_CACurrentMediaTime", referenced from:
      MVKSwapchain::recordPresentTime(MVKImagePresentInfo const&, unsigned long long) in libMoltenVK.a(libMoltenVK.a-arm64-master.o)
      MVKSwapchain::recordPresentTime(MVKImagePresentInfo const&, unsigned long long) in libMoltenVK.a(libMoltenVK.a-arm64-master.o)
  "_CFArrayCreateMutable", referenced from:
  "_CFArrayAppendValue", referenced from:
      MVKImage::useIOSurface(__IOSurface*) in libMoltenVK.a(libMoltenVK.a-arm64-master.o)
      MVKImage::useIOSurface(__IOSurface*) in libMoltenVK.a(libMoltenVK.a-arm64-master.o)
...

添加后，可成功编译为静态库，可被用于其它应用调用，而无需像vkpeak里那样使项目代码和ncnn代码夹杂在同一个目录里。

[tencent-adm]

All committers have signed the CLA.

[codecov-commenter]

Codecov Report

Merging #4859 (540e930) into master (e8645e9) will decrease coverage by 4.78%.
Report is 7 commits behind head on master.
The diff coverage is n/a.

@@             Coverage Diff             @@
##           master    #4859       +/-   ##
===========================================
- Coverage   94.53%   89.75%    -4.78%     
===========================================
  Files         779      309      -470     
  Lines      221835    84270   -137565     
===========================================
- Hits       209706    75637   -134069     
+ Misses      12129     8633     -3496     

see 637 files with indirect coverage changes

[nihui]

Thanks for your contribution !