Introduce new PlayContentHandler to abstract Second Swipe #486

Job	Run time
bookworm armv7 / build	1m 18s
bullseye armv7 / build	1m 16s
bullseye armv7 / test (run_install_common.sh)	13m 54s
bullseye armv7 / test (run_install_faststartup.sh)	10m 6s
bullseye armv7 / test (run_install_webapp_local.sh)	21m 19s
bullseye armv7 / test (run_install_webapp_download.sh)	14m 28s
bullseye armv7 / test (run_install_libzmq_local.sh)	24m 53s
bookworm armv7 / test (run_install_common.sh)	15m 11s
bookworm armv7 / test (run_install_faststartup.sh)	11m 3s
bookworm armv7 / test (run_install_webapp_local.sh)	21m 37s
bookworm armv7 / test (run_install_webapp_download.sh)	14m 5s
bookworm armv7 / test (run_install_libzmq_local.sh)	25m 58s
bullseye armv7 / cleanup	2s
bookworm armv7 / cleanup	2s
	2h 55m 12s

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