* Allow extensions to store EffectMetadata.
* Rework gdjs.PixiFiltersTools to allow new effects to be dynamically registered.
* Update EffectsList to read effects from extensions.
* Update GDJS ExporterHelper to export include files for effects
* Rename effectName to effectType to avoid confusions in gd::Effect
* 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