Add enabled module names to the list of supported features for the project manager

[aaronfranke]

This PR enhances the project feature warning system in the project manager by listing all enabled modules as supported features. This allows people to manually list required modules in their projects, and does not require Godot to know about those modules at all - Godot only knows that the project asks for XYZ and it's missing.

As an example, I tested a project with this text in project.godot:

config/features=PackedStringArray("4.0", "GDScript", "WebP", "WebXR", "Voxel")

And this is what shows up in the project manager of Godot compiled with WebXR disabled:

4.0, GDScript, and WebP are all supported, so they are not warned about. WebXR is disabled, and Voxel is not present, so they're not in the supported features list, and the project manager warns about them.

[Calinou]

Should the warning test in the project text have a "Missing modules:" prefix (or "Missing:" if there isn't enough space)?

[aaronfranke]

@Calinou The system doesn't make the distinction of whether a feature is a module or not. It's purposefully simple, just a list of strings. The strings can be modules, or they could be other features, or engine versions.

[akien-mga]

The code for this is mostly simple, but it does require adding a new method to each module's config.py. We could use the folder names, but since these names are displayed to the user, I think nicer names are better.

I would use the folder name to keep it simple, and pass it through EditorPropertyNamesProcessor for prettification.

[akien-mga]

CC @timothyqiu

[aaronfranke]

@timothyqiu Thanks, indeed that fixed it. I updated this PR.