Add all ISO-639-3 languages' names to Language.ts (#1082)

* Update Language.ts

Add all ISO-639-3 languages

* Update Language.ts

Delete duplicate lzh and udm tags

* Split into its own dict

* keep only 639-1 in the first dict

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Co-authored-by: Julien Chaumond <[email protected]>

Author: lbourdois