Update clang-format to version 11

This is taken from the Godot repository, so formatting is similar. This
updates the style rules as well.

Also fix style in files to conform with this version.

include/core/GodotGlobal.hpp

@@ -23,7 +23,6 @@ extern "C" const godot_gdnative_ext_net_3_2_api_struct *net_3_2_api;
 extern "C" const void *gdnlib;
 
 class Godot {
-
 public:
 	static void print(const String &message);
 	static void print_warning(const String &description, const String &function, const String &file, int line);