Refactor Gallery UI to Use Grid Layout and Image Viewer Fragment

[Chayandev]

Fixes and new impelmentation in detail:

1. Implement a Grid Layout: Display images in a 2-column grid for a cleaner, more organized gallery view. The grid should be responsive to different screen sizes and maintain even spacing between images.

2. Image Viewer Fragment: When a user clicks on an image in the grid, open the image in a full-screen fragment.
The fragment should have a sleek UI with options to:
Delete the image: Provide a confirmation dialog before deleting.
Download the Image: Show a toast notification confirming the download action.
Ensure smooth transitions between the gallery and the image viewer fragment.

If you assign this issue to me, I will start work on it.

[chesh-ire]

Hey ,
I would like to work on this issue . Please assign this to me