refactor: introduce shared tokenizer abstraction and split implementa… #2199

Job	Run time
ubuntu-latest-cmake	5m 35s
windows-latest-cmake-hip	4m 49s
ubuntu-latest-cmake-vulkan	9m 40s
Build and push container images (cuda)	14m 30s
Build and push container images (vulkan)	8m 8s
Build and push container images (sycl)	17m 18s
macOS-latest-cmake	6m 55s
Build and push container images (musa)	48m 50s
ubuntu-latest-rocm	32m 21s
windows-latest-cmake (noavx, -DGGML_NATIVE=OFF -DGGML_AVX=OFF -DGGML_AVX2=OFF -DGGML_FMA=OFF -DSD...	3m 1s
windows-latest-cmake (avx2, -DGGML_NATIVE=OFF -DGGML_AVX2=ON -DSD_BUILD_SHARED_LIBS=ON)	2m 59s
windows-latest-cmake (vulkan, -DSD_VULKAN=ON -DSD_BUILD_SHARED_LIBS=ON)	7m 0s
windows-latest-cmake (avx, -DGGML_NATIVE=OFF -DGGML_AVX=ON -DGGML_AVX2=OFF -DSD_BUILD_SHARED_LIBS...	3m 5s
windows-latest-cmake (avx512, -DGGML_NATIVE=OFF -DGGML_AVX512=ON -DGGML_AVX=ON -DGGML_AVX2=ON -DS...	3m 4s
windows-latest-cmake (cuda12, -DSD_CUDA=ON -DSD_BUILD_SHARED_LIBS=ON -DCMAKE_CUDA_ARCHITECTURES='...	1h 57m 54s
release	1m 49s
	4h 46m 58s

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