Add Android share-sheet support (ACTION_SEND image/*) to allow sharing images directly into "Ask Image"

[Zerodya]

Is your feature request related to a problem? Please describe. Currently, there’s no way to share an image directly from Android into Edge Gallery. I have to open the app and manually navigate to “Ask Image,” which is cumbersome.

Describe the solution you'd like Add a share-target for images so users can long-press any image, choose Edge Gallery from the share menu, and open it directly in “Ask Image.”

Describe alternatives you've considered None.

Additional context This would streamline workflows for quickly summarizing images or extracting text with Gemma. without going through multiple hoops.