ggml : fix arm build (#10890) * ggml: GGML_NATIVE uses -mcpu=native on ARM Signed-off-by: Adrien Gallouët <[email protected]> * ggml: Show detected features with GGML_NATIVE Signed-off-by: Adrien Gallouët <[email protected]> * remove msvc support, add GGML_CPU_ARM_ARCH option * disable llamafile in android example * march -> mcpu, skip adding feature macros ggml-ci --------- Signed-off-by: Adrien Gallouët <[email protected]> Co-authored-by: Adrien Gallouët <[email protected]>