mtmd : support Qwen 2.5 Omni (input audio+vision, no audio output) (#… #160

Job	Run time
macOS-arm64	1m 12s
windows-cpu (x64)	3m 55s
windows (opencl-adreno, arm64, -G "Ninja Multi-Config" -D CMAKE_TOOLCHAIN_FILE=cmake/arm64-window...	3m 3s
windows (vulkan, x64, -DGGML_VULKAN=ON, ggml-vulkan)	3m 52s
windows-cuda (12.4)	3m 16s
macOS-x64	2m 10s
windows-cuda (11.7)	6m 58s
windows-sycl	8m 8s
ubuntu-22-vulkan	3m 2s
windows-cpu (arm64)	2m 7s
ubuntu-22-cpu (arm64, ubuntu-22.04-arm)	3m 6s
ios-xcode-build	10m 48s
windows-hip (radeon, gfx1100;gfx1101;gfx1102;gfx1030;gfx1031;gfx1032)	8m 14s
ubuntu-22-cpu (x64, ubuntu-22.04)	36s
release	1m 24s
	1h 1m 51s

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