feat: Add Idle Shutdown Timer support #445

Job	Run time
bookworm armv7 / build	1m 43s
bullseye armv7 / build	1m 25s
bullseye armv7 / test (run_install_common.sh)	13m 17s
bullseye armv7 / test (run_install_faststartup.sh)	9m 52s
bullseye armv7 / test (run_install_webapp_local.sh)	13m 20s
bullseye armv7 / test (run_install_webapp_download.sh)	13m 18s
bullseye armv7 / test (run_install_libzmq_local.sh)	13m 21s
bookworm armv7 / test (run_install_common.sh)	12m 54s
bookworm armv7 / test (run_install_faststartup.sh)	12m 54s
bookworm armv7 / test (run_install_webapp_local.sh)	12m 54s
bookworm armv7 / test (run_install_webapp_download.sh)	12m 54s
bookworm armv7 / test (run_install_libzmq_local.sh)	12m 54s
bookworm armv7 / cleanup	2s
bullseye armv7 / cleanup	3s
	2h 10m 51s

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