Introduce new PlayContentHandler to abstract Second Swipe #471

Job	Run time
bookworm armv7 / build	1m 27s
bullseye armv7 / build	1m 30s
bookworm armv7 / test (run_install_common.sh)	15m 2s
bookworm armv7 / test (run_install_faststartup.sh)	10m 53s
bookworm armv7 / test (run_install_webapp_local.sh)	19m 36s
bookworm armv7 / test (run_install_webapp_download.sh)	14m 1s
bookworm armv7 / test (run_install_libzmq_local.sh)	25m 49s
bullseye armv7 / test (run_install_common.sh)	13m 44s
bullseye armv7 / test (run_install_faststartup.sh)	9m 56s
bullseye armv7 / test (run_install_webapp_local.sh)	20m 40s
bullseye armv7 / test (run_install_webapp_download.sh)	14m 26s
bullseye armv7 / test (run_install_libzmq_local.sh)	24m 23s
bullseye armv7 / cleanup	4s
bookworm armv7 / cleanup	2s
	2h 51m 33s

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