It is proposed to add a "Merge GIFs" feature within the existing "GIF Tools" section of ImageToolbox, to expand its capabilities for dynamic image processing.

[Qwucaksryh]

1. Order Selection: Allows users to import multiple GIF files and manually adjust their playback sequence.
2. Merge & Output: Merges the sorted GIFs in order into a new, single GIF file.
3. Parameter Setting: Allows for basic configuration during merging, such as output size, frame rate handling (e.g., unifying rates), and loop count.