[WIP] scripts: Add script to build QEMU #1888

Job	Run time
Setup	8s
GNU Toolchain aarch64-zephyr-elf (linux-aarch64)	1h 7m 39s
LLVM Toolchain (linux-x86_64)	36m 53s
GNU Toolchain aarch64-zephyr-elf (macos-aarch64)	28m 37s
GNU Toolchain aarch64-zephyr-elf (macos-x86_64)	31m 36s
GNU Toolchain aarch64-zephyr-elf (windows-x86_64)	30m 46s
GNU Toolchain aarch64-zephyr-elf (linux-x86_64)	19m 23s
LLVM Toolchain (macos-x86_64)	2h 13m 49s
LLVM Toolchain (windows-x86_64)	43m 29s
LLVM Toolchain (linux-aarch64)	2h 53m 51s
LLVM Toolchain (macos-aarch64)	51m 47s
CMake Package (windows-x86_64)	22s
CMake Package (linux-aarch64)	50s
CMake Package (linux-x86_64)	21s
CMake Package (macos-x86_64)	13s
Host Tools (linux-aarch64)	1h 7m 40s
Host Tools (linux-x86_64)	18m 48s
CMake Package (macos-aarch64)	13s
Host Tools (macos-aarch64)	7m 4s
Host Tools (windows-x86_64)	2m 14s
Host Tools (macos-x86_64)	7m 0s
Distribution Bundle (linux-aarch64)	1m 36s
Distribution Bundle (macos-aarch64)	5m 2s
Distribution Bundle (linux-x86_64)	4m 28s
Distribution Bundle (macos-x86_64)	5m 10s
Distribution Bundle (windows-x86_64)	2m 0s
Test (${{ matrix.testenv.name }}, ${{ matrix.toolchain }}) Subset ${{ matrix.subset }}	1s
Test Result	1s
	12h 21m 1s

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