SLM: Shader

The lens particle system has been optimized; particles now process in batches, reducing the load on the client.

The generation commands for lens particles have been modified to support the following modes:
Simple: A single particle with no velocity, featuring configurable coordinates and delta values.
Normal: Configurable particle count, position, and delta; velocity functions as a spawn trend within a specific area.
Advanced: Includes all the above, but velocity is configured via x, y, and z vectors, allowing for total control at the cost of random dispersion.

A new "Shader Items" system was added, enabling shaders to be rendered over item layers or allowing the generation of geometry onto which a fragment shader is applied.

A "Shader Particles" system was added, allowing GLSL Shaders to be loaded as particles; several reusable base particle types are included, and the system utilizes a billboard mechanism to control on-render distribution.

This system mirrors the previous command structure with three modes (simple, normal, and advanced) and also operates using batch processing.