[AIAvatar] Newton Json dependency

[HJLeee]

I happen to come across AIAvatar impl and realize that it uses Newton Json as below. https://github.com/Samsung/TizenFX/blob/149fe2f178249e25a1112216925f26b814a16f29/src/Tizen.AIAvatar/Tizen.AIAvatar.csproj#L10

This could create a version mismatch when app uses other version of newton json. Also, System.Text.Json is known to be faster and take less memory. Please fix the potential bug before it is released.

[github-actions[bot]]

This issue is stale because it has been open 60 days with no activity. Remove stale label or comment or this will be closed in 7 days

[HJLeee]

It seems @huiyueun is no longer in charge of AIAvatar but @dongsug-song from the log.

[sung-su]

@AnglerLee Please take a look.

[AnglerLee]

@sung-su Hello, I am in the process of refactoring the Tizen.AIAvatar project. This issue has been removed from the refactoring module and changed to use System.Text.Json instead.