refactor: change folder location for Backup and Extracted

[UnaTried]

This was requested on issue #3201, I don't know how to test this, so I don't know if it will work. It should in theory though!

P.S: I am not a go-er I just made those changes, did go build and there was no ouput, so I assumed it worked, since it was throwing error whenever there was one.

Linux only version

func GetStateFolder(name string) string {
	result, isAvailable := os.LookupEnv("SPICETIFY_STATE")
	defer func() { CheckExistAndCreate(result) }()
		
	if isAvailable && len(result) > 0 {
		return result
	}

	if runtime.GOOS == "linux" {
		parent, isAvailable := os.LookupEnv("XDG_STATE_HOME")

		if !isAvailable || len(parent) == 0 {
			parent = filepath.Join(os.Getenv("HOME"), ".local", "state")
			CheckExistAndCreate(parent)
		}

		result = filepath.Join(parent, "spicetify")
	}
	return result
}

[rxri]

it doesn't return anything when env variable is undefined & os isn't linux tho

[UnaTried]

As I said, I do not use go, I just tried to fix that issue mixing GetUserFolder and GetSpicetifyFolder to make GetStateFolder

[rxri]

Then revert your last commit you made?

[UnaTried]

Ok, I have reverted my commit @rxri