Flutter re-orderable custom page view

[yeasin50]

• [ ] Tap and hold any image to shrink the images (ex: to 80% width) and show the edges of the previous/next image in the view, to indicate there are other pages
• [ ] Drag the image left/right and have it 'jump over' pages to either side. The animation should be smooth, like reordering app icons on the home screen
• [ ] Clamp the pages at the beginning/end appropriately.
• [ ] Images should retain their aspect ratio during the shrink and drag.
• [ ] When the re-order is complete, trigger a function to print out the newly ordered list of image urls.
• [ ] The reorder should only work if the allowReorder parameter is true.
• [ ] The PJMultiPhotoCard may not take up the whole screen, it may be a child of a larger view.

[yeasin50]

QA: While the objective is about re-ordering, how about having something like this video, will adopt your requirement @cjbeauchamp