[Feature] Change Musify language by App languages system setting screen about musify HOT 2 OPEN

Officially, Flutter doesn't support it yet, but I've completed half of the implementation while testing. I just don't see the reason for doing this when we can change the app language from within the app itself.

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@gokadzev, Personally, I think the best place to select the language of an application is in its properties screen (where its version, space occupied, permissions granted, power saving mode, etc. are indicated). However, Google’s option is also not bad, since it has two advantages over the “traditional” language setting in the application itself:

1. The interface of the applications is different, and the user generally has to look for a place in the settings of each application where he can change the language of the application. At the same time, there may not be any language settings in the application at all. In addition, in general, if a user wants to change the application language from English to one that he knows better, it is more convenient for him to do this through a familiar operating system interface than through the interface of an unfamiliar application displayed in a language he is not familiar with.

2. Perhaps the unified system of locales promoted by the OS developer will be more convenient for translators than alternative methods. I was prompted to this idea by the phrase

Google has added support for inline translation with Android 12 and it may be possible for Android to translate apps on its own even if the app developers don't add other languages in the future.

from here, and the final part of the article "Working with Android Per-App Language Preferences".

But, of course, the last word is yours.

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