BETA DiffSinger Japanese Extended Phonemizer (for Lunai)

Requires DiffSingerRefinedPhonemizer API (to my knowledge, only available in Lunai Edition at the time of writing. Other versions with this feature should also be compatible.)

Now it actually supports the replacements to compensate for the weird phonemes. Also no longer tries to turn EP into [ja/e ja/p]. Appears in the phonemizer list as "Japanese+" to match Lunai naming conventions. Otherwise identical to the previous version. See v0.1.0BETA for full description.