chore: add design template #276

Job	Run time
linux-x86-deny	44s
linux-x86-ci-generated	13s
linux-native-ci-asm (ubuntu-latest)	56s
linux-native-ci-asm (ubuntu-24.04-arm)	1m 5s
macos-x86-ci-asm	1m 47s
linux-native-ci-asm-chaos (ubuntu-24.04-arm)	59s
linux-arm-ci-asm	7m 29s
linux-native-test-spawn (ubuntu-latest)	45s
linux-native-test-spawn (ubuntu-24.04-arm)	46s
linux-native-ci-asm-chaos (ubuntu-latest)	46s
linux-arm-test-suite	7m 37s
windows-x86-ci-asm	3m 30s
linux-fuzz	4m 45s
linux-x86-ci (ubuntu-24.04-arm)	52s
linux-native-test-suite (ubuntu-latest)	3m 41s
linux-x86-ci (ubuntu-latest)	43s
linux-native-test-suite (ubuntu-24.04-arm)	3m 4s
	39m 42s

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