Add notifications and shutter sound support

[Lortunate]

Summary of Changes

• Integrated macOS-specific notification support by extending Info.plist.
• Added rodio dependency to enable shutter sound playback during captures.
• Implemented desktop notification handling using the notify-rust crate.
• Refactored code to streamline the notification logic for cross-platform compatibility.

Checklist

• Code has been reviewed for clarity and efficiency.

[gemini-code-assist]

Summary of Changes

Hello @Lortunate, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request significantly enhances user feedback by introducing desktop notifications for capture and save events, and by playing a shutter sound upon successful image operations. These additions improve the overall user experience by providing clear auditory and visual cues, particularly for quick capture workflows. The changes also include platform-specific configurations for macOS to ensure native notification behavior.

Highlights

• Desktop Notifications: Implemented desktop notifications for capture events using the notify-rust crate, providing visual feedback to the user upon successful operations.
• Shutter Sound Playback: Added a shutter sound effect using the rodio crate, which plays when an image is successfully captured, copied, or saved.
• macOS Integration: Enhanced macOS-specific integration by extending Info.plist to configure native notification styles and setting the application identifier for notify-rust.
• Refactored Notification Logic: Streamlined the notification emission logic within the ScreenCapture bridge by introducing a new send_notification helper function, simplifying the QML interface and improving cross-platform compatibility.

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[Lortunate]

/gemini review

[gemini-code-assist]

Code Review

This pull request successfully adds notification and shutter sound support. The integration of notify-rust and rodio is well-done. I have identified one critical issue regarding potential panics when playing sounds due to unhandled errors. Additionally, there are a couple of medium-severity suggestions to replace hardcoded strings with constants to improve maintainability. Overall, these are great additions to the application.