add block particles property

src/voxels/Block.hpp

@@ -10,6 +10,8 @@
 #include "maths/aabb.hpp"
 #include "typedefs.hpp"
 
+struct ParticlesPreset;
+
 namespace data {
     class StructLayout;
 }
@@ -199,6 +201,8 @@ public:
 
     std::unique_ptr<data::StructLayout> dataStruct;
 
+    std::unique_ptr<ParticlesPreset> particles;
+
     /// @brief Runtime indices (content indexing results)
     struct {
         /// @brief block runtime integer id