Hide redundant categories from project settings

[KoBeWi]

Salvage of #39670 with some extras. Aside from Autoloads, it hides Editor Plugins and Shader Globals:

(they have their own tabs too)

Fixes #39639
Fixes #24453

[akien-mga]

Thanks!

[akien-mga]

Cherry-picked for 3.5.

[KoBeWi]

This could've been done better actually. Inspector will automatically hide properties that don't have PROPERTY_USAGE_EDITOR, so a better solution would be removing this flag from these properties.

EDIT:
There is also this 🤔

godot/core/config/project_settings.cpp

Lines 347 to 351 in 3dac7ff

	if (vc.name.begins_with("input/") || vc.name.begins_with("import/") || vc.name.begins_with("export/") || vc.name.begins_with("/remap") || vc.name.begins_with("/locale") || vc.name.begins_with("/autoload")) {
	vc.flags = PROPERTY_USAGE_STORAGE;
	} else {
	vc.flags = PROPERTY_USAGE_EDITOR | PROPERTY_USAGE_STORAGE;
	}

Definitely need to do a cleanup here.