Fixed an issue that could cause a crash.

- Fixed an issue with the image inpaint undo function. - Fixed several potential crash issues. - Fixed an issue where the brush size did not match the actual stroke size when the image was zoomed in.

- Supports video processing - Allows selecting OptiClean directly from the right-click “Open With” menu to process images and videos

1. Added an Example interface, users can experience the app's functions before starting the trial. In this interface, users who have not purchased can only experience product functions on the sample picture, and cannot open new pictures. 2. Added the function of zooming and panning pictures - Zoom: Use the mouse wheel or touchpad to zoom - Pan: Hold down the space bar and use the left mouse button to drag 3. Added Multi Mask function, you can draw multiple masks at the same time and then manually trigger the clear operation. The shortcut key is: m 4. Added model warmup to optimize the first inpainting experience