batch infrastructure

[nihui]

No description provided.

[tencent-adm]

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[codecov-commenter]

Codecov Report

❌ Patch coverage is 87.98511% with 226 lines in your changes missing coverage. Please review.
✅ Project coverage is 94.29%. Comparing base (e366f48) to head (d637571).
⚠️ Report is 2 commits behind head on master.

Files with missing lines	Patch %	Lines
src/mat.cpp	71.54%	68 Missing ⚠️
src/layer/arm/packing_arm.cpp	75.34%	54 Missing ⚠️
src/net.cpp	73.11%	50 Missing ⚠️
src/command.cpp	53.70%	25 Missing ⚠️
src/layer/arm/cast_arm.cpp	50.00%	6 Missing ⚠️
src/layer/loongarch/cast_loongarch.cpp	83.33%	6 Missing ⚠️
src/layer/mips/cast_mips.cpp	83.33%	6 Missing ⚠️
src/layer/x86/cast_x86.cpp	50.00%	6 Missing ⚠️
src/layer/vulkan/packing_vulkan.cpp	95.04%	5 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #6656      +/-   ##
==========================================
+ Coverage   93.79%   94.29%   +0.49%     
==========================================
  Files         917      715     -202     
  Lines      288530   232172   -56358     
==========================================
- Hits       270634   218921   -51713     
+ Misses      17896    13251    -4645     

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