Add on-device tex-to-speech (TTS) demo for HarmonyOS #1384

Job	Run time
ubuntu-latest Release shared	11m 36s
ubuntu-latest Release static	10m 58s
ubuntu-latest Debug shared	34m 7s
ubuntu-latest Debug static	36m 39s
macos-latest Release shared	11m 24s
macos-latest Release static	10m 57s
macos-latest Debug shared	27m 38s
macos-latest Debug static	28m 30s
	2h 51m 49s

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