《新华字典》 is copyrighted, so even
@alex_hk90 can't legally convert it. ECCP reader's status seems to be uncertain, but we can write them to ask about it - if they are OK with it being distributed then there's probably no reason we couldn't release it as an official Pleco database.
(we hugely appreciate alex_hk90's efforts, but they're only necessary in the narrow situation where a dictionary is a) open-source but also b) restricted to non-commercial use - if it's not open-source then nobody can distribute it without a license, if it's open-source and permits commercial use then we can distribute it ourselves)