Add TimeZoneIdMapper to icu_timezone (#4774) #1830

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WASM Demo	3m 37s
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bench-memory (macos-latest)	1s
bench-memory (ubuntu-latest)	1s
bench-memory (windows-latest)	1s
bench-perf (components/collections)	1s
bench-perf (components/datetime)	1s
bench-perf (components/locid)	1s
bench-perf (components/locid_transform)	1s
bench-perf (components/plurals)	1s
bench-perf (components/segmenter)	1s
bench-perf (provider/blob)	1s
bench-perf (utils/fixed_decimal)	1s
bench-perf (utils/litemap)	1s
bench-perf (utils/tinystr)	1s
bench-perf (utils/writeable)	1s
bench-perf (utils/zerotrie)	1s
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