Template match with gray model(ncc)

Note: branch feature-rotate-model method 2x faster at matching!

highlights:

1. original code based Fastest_Image_Pattern_Matching, you can check out tag v1.0 for more details.
2. refactor simd match process with opencv Universal intrinsics, have be tested on x86_64(sse),arm(neon),LoongArch(lsx).
3. support model save/load as binary file
4. provide pure c interface
5. support openmp
6. position with 3x3 subpixel interpolation

usage:

all you need can be found in main.cpp

gallery: