feat(prefs): add iOS impl + non-effect interface #146

Job	Run time
packages/npm/prefs / build-android	1m 21s
packages/npm/prefs / lint	33s
packages/npm/prefs / build-library	32s
packages/npm/financekit / build-android	1m 18s
packages/npm/financekit / build-ios	14m 54s
packages/npm/financekit / build-library	35s
packages/npm/financekit / lint	33s
packages/npm/financekit / test	29s
packages/npm/prefs / build-ios	1m 40s
packages/npm/prefs / test	31s
packages/npm/send / build-android	1m 29s
packages/npm/send / build-ios	1m 40s
packages/npm/send / build-library	31s
packages/npm/send / lint	32s
packages/npm/send / test	29s
	27m 7s

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