The ggml logs go through SD log_printf

[clibdev]

Currently, there is no straightforward way to disable ggml logs. This PR redirects ggml logs to go through the SD log_printf function. For example:

[INFO ] ggml_extend.hpp:61   - ggml_cuda_init: GGML_CUDA_FORCE_MMQ:    no
[INFO ] ggml_extend.hpp:61   - ggml_cuda_init: GGML_CUDA_FORCE_CUBLAS: no
[INFO ] ggml_extend.hpp:61   - ggml_cuda_init: found 1 CUDA devices:
...
[INFO ] stable-diffusion.cpp:243  - Version: SD 1.x 
[INFO ] stable-diffusion.cpp:276  - Weight type:                 f32
[INFO ] stable-diffusion.cpp:277  - Conditioner weight type:     f32
[INFO ] stable-diffusion.cpp:278  - Diffusion model weight type: f32
[INFO ] stable-diffusion.cpp:279  - VAE weight type:             f32

[clibdev]

@leejet Are you interested in this PR, or should I go ahead and close it?

[leejet]

Sorry for the late reply. I think this change looks good, and I will merge it.

[leejet]

Thank you for your contribution.