Refactor EMA smoothing into composable powermeter wrappers (#331) #645

Job	Run time
lint	16s
validate (3.10)	42s
validate (3.13)	36s
validate (3.12)	42s
validate (3.11)	41s
build (linux/amd64, base-linux-amd64) / build	24s
build (linux/arm64, base-linux-arm64) / build	34s
build-addon (linux/arm64, addon-linux-arm64) / build	32s
build (linux/arm/v7, base-linux-arm-v7) / build	37s
build-addon (linux/amd64, addon-linux-amd64) / build	31s
merge-addon / merge	25s
merge / merge	24s
	6m 24s

Provide feedback