Melon Shader Cycler

Added a full config screen accessible in-game for customizing shader cycling behavior. Introduced a new exclusion system using checkboxes to prevent specific shaders from being included in the cycling rotation. The config file now saves and loads these values, with options for cycle mode and reload delay also editable from the GUI. Shader changes from the dropdowns immediately apply and reload shaders in-game using reflection or Iris integration. Added a Reset to Defaults button and improved overall UI clarity.