llama.swiftui : add bench functionality #6902

Job	Run time
ubuntu-latest-cmake	1m 35s
ubuntu-latest-cmake-mpi (mpich)	1m 44s
ubuntu-focal-make	1m 30s
ubuntu-latest-cmake-sanitizer (ADDRESS, Debug)	5m 42s
ubuntu-latest-cmake-mpi (libopenmpi-dev)	1m 50s
ubuntu-latest-cmake-sanitizer (ADDRESS, Release)	3m 58s
ubuntu-latest-cmake-sanitizer (THREAD, Debug)	15m 41s
ubuntu-latest-cmake-sanitizer (THREAD, Release)	6m 22s
ubuntu-latest-cmake-sanitizer (UNDEFINED, Debug)	5m 31s
ubuntu-latest-cmake-sanitizer (UNDEFINED, Release)	3m 47s
ios-xcode-build	2m 11s
macOS-latest-cmake	4m 18s
macOS-latest-cmake-ios	17s
macOS-latest-cmake-tvos	1m 31s
macOS-latest-make	2m 37s
macOS-latest-swift (generic/platform=macOS)	12s
windows-latest-cmake (noavx, -DLLAMA_NATIVE=OFF -DLLAMA_BUILD_SERVER=ON -DLLAMA_AVX=OFF -DLLAMA_A...	3m 2s
macOS-latest-swift (generic/platform=iOS)	21s
windows-latest-cmake-cublas (12.2.0, cublas)	15m 53s
windows-latest-cmake (avx2, -DLLAMA_NATIVE=OFF -DLLAMA_BUILD_SERVER=ON -DBUILD_SHARED_LIBS=ON)	2m 59s
macOS-latest-swift (generic/platform=tvOS)	1s
windows-latest-cmake-cublas (11.7.1, cublas)	15m 1s
windows-latest-cmake (avx, -DLLAMA_NATIVE=OFF -DLLAMA_BUILD_SERVER=ON -DLLAMA_AVX2=OFF -DBUILD_SH...	2m 53s
windows-latest-cmake (avx512, -DLLAMA_NATIVE=OFF -DLLAMA_BUILD_SERVER=ON -DLLAMA_AVX512=ON -DBUIL...	6m 16s
windows-latest-cmake (clblast, -DLLAMA_NATIVE=OFF -DLLAMA_BUILD_SERVER=ON -DLLAMA_CLBLAST=ON -DBU...	1m 39s
windows-latest-cmake (openblas, -DLLAMA_NATIVE=OFF -DLLAMA_BUILD_SERVER=ON -DLLAMA_BLAS=ON -DBUIL...	2m 52s
release	0s
	1h 49m 43s

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