Introduce new PlayContentHandler to abstract Second Swipe #472

Job	Run time
bookworm armv7 / build	1m 23s
bullseye armv7 / build	1m 31s
bookworm armv7 / test (run_install_common.sh)	14m 47s
bookworm armv7 / test (run_install_faststartup.sh)	10m 31s
bookworm armv7 / test (run_install_webapp_local.sh)	20m 27s
bookworm armv7 / test (run_install_webapp_download.sh)	14m 0s
bookworm armv7 / test (run_install_libzmq_local.sh)	25m 21s
bullseye armv7 / test (run_install_common.sh)	13m 50s
bullseye armv7 / test (run_install_faststartup.sh)	10m 2s
bullseye armv7 / test (run_install_webapp_local.sh)	20m 8s
bullseye armv7 / test (run_install_webapp_download.sh)	16m 54s
bullseye armv7 / test (run_install_libzmq_local.sh)	23m 28s
bullseye armv7 / cleanup	2s
bookworm armv7 / cleanup	4s
	2h 52m 28s

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