- Implemented a simple gif encoder based on the rust crate "gif".
- Currently supported input pixel formats are RGB and RGBA
- The encoder dynamically changes frame delays to approximate the actual
input framerate
- For the moment, each frame uses its own local colorpalette, leading to
good image quality, but big files
- Every frame is currently a full frame. No incremental frames for now
- The produced GIF is currently compressed (LZW)
