Improve savedata ease-of-use on Android

[ToaderTheToad]

Currently, the Android port of ReMinecraftPE saves to /storage/emulated/0/Android/data/io.github.reminecraftpe/files/.reminecraftpe/games/com.mojang/, which is a problem on modern Android as app folders are extremely locked down; I can't find any way to copy files into it on my Samsung s25+ and am stuck with the default textures.
However, certain apps seem to be able to allow the user to easily access their user folder using the default file manager, and accessing the directory this way does allow the user to copy files into it:

Could something like this be implemented for ReMinecraftPE?

[BrentDaMage]

The SDL_AndroidGetExternalStoragePath function is supposed to return a path from the external storage (usually a microSD card). However, it seems like Android has started virtualizing the external storage internally, and has made it so users can no longer write to it. We will likely have to look at how Dolphin is structured. Hopefully it's as simple as adding something to a manifest file.