fix: enhance application exit handling and add NSIS installer hooks

[Yashh56]

This pull request introduces improvements to process management for the Windows installer and application lifecycle, as well as minor configuration and UI changes. The main focus is ensuring that background processes are properly terminated during installation, updates, and application exit to prevent file access errors and orphaned processes.

Process management and installer enhancements:

• Added a custom NSIS installer hook (installer-hooks.nsi) to kill any running bridge.exe and RelWave.exe processes before installation or update, preventing file access errors on Windows.
• Updated the Tauri configuration (tauri.conf.json) to register the new NSIS installer hook for Windows builds.
• Modified the application exit logic in main.rs to kill the bridge process when the app exits, preventing orphaned background processes.

User interface changes:

• Removed the Cut, Copy, and Paste options from the developer context menu in DeveloperContextMenu.tsx.