feat: add device group subscription #20

Job	Run time
codeql / Analyze (javascript)	1m 17s
warmup-cache / warmup-cache	25s
docker-build / Build Docker image	57s
linting / check-linting	30s
coverage / coverage-test	55s
types / check-types	35s
translations / check-translations	26s
build / build	48s
formatter / check-format	30s
	6m 23s

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