feat: custom user folder

[oldcrate]

Allows users to move user folder to their specified location.

All the files that would've normally been stored inside Constants.USER_FOLDER are stored in that location.
The only file that still has to be stored in USER_FOLDER is the one that stores the actual path to the user specified location.

[oldcrate]

I noticed when I spawn a toast notification the text goes outside the screen.

Should I fix this in this pr, make an issue or just shorten the text?

[nyuwaea]

Nice work so far, do you plan on making it move the user files to the new location on restart? I think it would be very nice QoL for this feature.

The toasts are indeed a little messy right now, feel free to fix the text clipping issue in this PR, though it would be best to make a separate one if you're doing more changes to them.

[oldcrate]

Nice work so far, do you plan on making it move the user files to the new location on restart? I think it would be very nice QoL for this feature.

Thank you. Yes, I can do that.

The toasts are indeed a little messy right now, feel free to fix the text clipping issue in this PR, though it would be best to make a separate one if you're doing more changes to them.

I was thinking of letting the toasts stretch a little more and, if the message still doesn't fit, divide it and fit it in more lines.
If the changes are big I'll make a new PR.