Add support for macOS Tahoe (Read Description)

[Melonchanism]

In macOS Tahoe, apple seems to have removed ECMaterialLayer, causing the swizzling on that class to no longer work. Since ECMaterialLayer's superclass is CALayer, we can swizzle that instead. I also found a more modern way to determine if the CALayer, in [CALayer setFrame:] is indeed the desktop switcher, and also check if the subLayers are initialized.

I do not have access to any Macs that run older versions, and that is why I recommend that several people on older os versions test this, and if this doesn't work, then use conditional code instead.

[jalexvig]

Any update on merging this?

[Melonchanism]

I have shifted back to Sequoia, and can verify that it works on there. There seems to be an issue with the loading though, so I guess that needs to get acknowledged first.

I do think that there needs to be some more work put in on detecting the amount of monitors and actually finding out which SpacesBar is on which display, and will do so if I'm not busy on other projects (prob in a month or so).