add 'random_sub_uv' particle setting

src/presets/ParticlesPreset.cpp

@@ -10,9 +10,11 @@ dv::value ParticlesPreset::serialize() const {
     root["max_distance"] = maxDistance;
     root["spawn_interval"] = spawnInterval;
     root["lifetime"] = lifetime;
+    root["lifetime_spread"] = lifetimeSpread;
     root["acceleration"] = dv::to_value(acceleration);
     root["explosion"] = dv::to_value(explosion);
     root["size"] = dv::to_value(size);
+    root["random_sub_uv"] = randomSubUV;
     return root;
 }
 
@@ -23,6 +25,8 @@ void ParticlesPreset::deserialize(const dv::value& src) {
     src.at("max_distance").get(maxDistance);
     src.at("spawn_interval").get(spawnInterval);
     src.at("lifetime").get(lifetime);
+    src.at("lifetime_spread").get(lifetimeSpread);
+    src.at("random_sub_uv").get(randomSubUV);
     if (src.has("acceleration")) {
         dv::get_vec(src["acceleration"], acceleration);
     }