Add blog post on CUDA kernels autodiff

[kchristin22]

Project: Reverse-mode autodiff of CUDA kernels using Clad
Mentors: @vgvassilev , @parth-07

[vvolkl]

Very nice and comprehensive write-up, thanks!

Some typos:

_gsocblogs/2024/blog_CUDA_kernels_autodiff.md:43: similary ==> similarly
_gsocblogs/2024/blog_CUDA_kernels_autodiff.md:54: siganture ==> signature
_gsocblogs/2024/blog_CUDA_kernels_autodiff.md:55: trully ==> truly
_gsocblogs/2024/blog_CUDA_kernels_autodiff.md:57: unfortunatelly ==> unfortunately
_gsocblogs/2024/blog_CUDA_kernels_autodiff.md:59: Tranform ==> Transform
_gsocblogs/2024/blog_CUDA_kernels_autodiff.md:230: lanuched ==> launched

[kchristin22]

Thanks for noticing those! I had missed them.

I hope it's ok now.

[kchristin22]

I fixed the syntax errors

[vvolkl]

Looks very good to me, giving @vgvassilev a chance to review before merging

[vgvassilev]

LGTM!