[GPU][Codegen] Implement virtual dense mfma (VDMFMA) #47416

Job	Run time
setup / setup	10s
runtime_small	3m 19s
runtime :: macos-14	2m 3s
runtime :: ubuntu-24.04	7m 27s
runtime :: ubuntu-24.04-arm	2m 19s
runtime :: windows-2022	9m 32s
runtime_tracing :: ubuntu-24.04-arm :: tracy	1m 25s
runtime_tracing :: ubuntu-24.04-arm :: console	4m 5s
runtime_tracing :: ubuntu-24.04 :: tracy	6m 27s
runtime_tracing :: ubuntu-24.04 :: console	6m 18s
runtime_tracing :: macos-14 :: tracy	1m 23s
runtime_tracing :: windows-2022 :: tracy	9m 9s
linux_x64_bazel / linux_x64_bazel	39m 53s
runtime_tracing :: windows-2022 :: console	8m 53s
runtime_tracing :: macos-14 :: console	1m 47s
linux_x64_gcc	0s
linux_x64_clang / linux_x64_clang	24m 48s
linux_x64_clang_asan / linux_x64_clang_asan	12m 44s
linux_x64_clang_ubsan / linux_x64_clang_ubsan	8m 9s
windows_x64_msvc	0s
linux_arm64_clang	0s
linux_x64_clang_tsan	0s
linux_x64_clang_debug	0s
linux_x64_clang_byollvm	0s
macos_x64_clang	0s
macos_arm64_clang	0s
ci_summary / summary	4s
	2h 29m 55s

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