Feature: Escape Button Exits Individual Media View

[nickytonline]

As a user, I want to press the Escape (ESC) button when viewing an individual media item to return to the main gallery view. This should function similarly to a modal window, allowing a quick exit.

Acceptance Criteria:

• Pressing ESC while viewing an individual media item that has not been edited closes that view and returns the user to the main gallery view. No confirmation prompt is required for this action.
• if the user has made unsaved edits to the individual media item, before returning to the main gallery view, a modal should ask if they want to save their edits.

Originally posted by @colbyfayock in https://github.com/cloudinary-community/photobox/issues/14#issuecomment-2171681975

[nickytonline]

I can take this one as well @colbyfayock as it relates to #14. For the modal, I'd just go with https://github.com/nickytonline/photobox/blob/efbe4c8180c42f2e350eb6dc0ac808d066be37ca/src/components/ui/dialog.tsx.