ci: add app CI workflows #12

Job	Run time
Orchestrator	6s
Get latest app version	4s
Documentation	0s
App (internal) / Verify	0s
App (selfserve) / Verify	0s
App (selfserve) / PHP / Warm cache	21s
App (internal) / PHP / Warm cache	25s
App (selfserve) / PHP / PHPStan	17s
App (selfserve) / PHP / PHP CodeSniffer	17s
App (selfserve) / PHP / Test	22s
App (selfserve) / PHP / Psalm	24s
App (internal) / PHP / PHPStan	16s
App (internal) / PHP / Test	32s
App (internal) / PHP / PHP CodeSniffer	13s
App (internal) / PHP / Psalm	15s
App (selfserve) / PHP / Package	0s
App (selfserve) / Docker	0s
App (selfserve) / Upload	0s
App (internal) / PHP / Package	0s
App (internal) / Docker	0s
App (internal) / Upload	0s
	3m 32s

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