Config for the new magic glass

[AcousticJamm-dev]

I just feel like the new magic glass sprite should be used if it's in the engine. Let me know if any of the chapters' configs is wrong.

[MrOinky]

Chapter 3 uses the old spr_magicalGlass_classic sprite in DELTARUNE, so only Chapter 4 should use the new one
As for the config name it might make more sense to be oldMagicGlass with the condition inverted for consistency with the names of other visual changes in the config?

[AcousticJamm-dev]

Got it, will make the change

[AcousticJamm-dev]

Both suggested changes have been made.

[nightpool]

@AcousticJammYT I noticed that you're using tabs instead of spaces here. You can see in the Github web UI that this is leading to mismatched indentation / whitespace errors. I'm not sure what the maintainers' opinion is, but I would suggest updating the formatting and whitespace style to match the rest of the file:

Which editor did you use to edit this file? VSCode will read the .editorconfig file at the root of this repository and configure your tab/space settings automatically, among other formatting options.

[AcousticJamm-dev]

I hate how Github doesn't automatically convert them. And I'm actually using N++.

In any case, fixed.