feat/add-drag-drop : Add Drag & Drop Functionality

[prateekbatra-g]

No description provided.

[gemini-code-assist]

Summary of Changes

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This pull request implements drag and drop functionality for notes within the Cahier application. It enhances the user experience by allowing notes to be easily moved and reorganized. The changes include UI modifications to provide visual feedback during drag operations and updates to the underlying logic to handle the drag and drop events.

Highlights

• Drag and Drop Functionality: This PR introduces drag and drop functionality to the Cahier app, allowing users to drag notes within the application.
• UI Enhancements: The PR modifies the UI to support drag and drop interactions, including visual feedback during the drag operation.
• Codebase Modernization: The PR updates dependencies and uses modern Compose APIs for implementing drag and drop.

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[gemini-code-assist]

Code Review

This pull request introduces drag-and-drop functionality to open notes in a new window. The implementation of the drag source appears correct. However, I've identified a critical issue in MainActivity.kt concerning state management on the drop target. The current implementation will not trigger a UI update when a note is dropped. I've provided a code suggestion to resolve this. Additionally, there's a minor opportunity to improve code clarity, for which I've also included a suggestion.