Glass material layer and encoding speed improvements

This update introduces a new glass material layer for frosted glass effects and improves encoding speeds for image sequences and MP4 videos.

Changes

• New: Glass material layer to enable frosted glass effects (non-cumulative).
• Improved image sequence encoding speed (experimental).
• Improved MP4 video encoding speed and framerate on macOS (experimental).
• Fixed various issues related to 2D primitives.
• Fixed various issues with object resizing.
• Minor bug fixes and improvements.