platform: boot raspberry pi hosts with extlinux #305

Job	Run time
Check for open PR	2s
Detect Changes	8s
Lint Kotlin (auth-api)	1m 2s
Lint Kotlin (assistant-api)	47s
Kotlin Unit Tests (auth-api)	2m 9s
Kotlin Unit Tests (assistant-api)	1m 38s
Kotlin Unit Tests (kotlin-common)	1m 5s
Build Verification	1m 57s
Lint Kotlin (kotlin-common)	50s
Lint Frontend	0s
Typecheck Frontend	0s
Frontend Unit Tests	0s
	9m 38s

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