* Update all CMakeLists of extensions to use clang-format
* Run clang-format on all Extensions
* Update GDCore CMakeLists.txt to add clang-format
* Run clang-format on GDCore files
* Update GDJS and GDCpp CMakeLists.txt to add clang-format
* Run clang-format on GDCpp and GDJS files
Code generation was modifying the events in place. If two or more scenes
used the same events, the events could be modified for a scene during code
generation, leading to a bad code generation for the others.
(In particular, if a scene was not containing an object, any action related to it
would be set an action with an empty type. Any other scene using the action will then
have the action not working).
Florian Rival