Add audio input and camera permissions to entitlements

[saeedvaziry]

This PR adds camera and audio entitlements to the desktop app.

Why?

While opencode doesn't need camera or audio, it has a built-in terminal which can be used to run the project that you're working with.

For example I am working on an app that requires camera and audio permissions and without this I am not able to run the app in my local because macOS doesn't allow camera or audio if it is not included in the entitlements file.

This has been already considered in terminal emulators like Ghostty or Alacrritty for such scenarios.