fix: add NSSupportsAutomaticGraphicsSwitching to Info.plist

Addresses high CPU usage during recording (related to #586 and #1673).
Without this key, macOS may default to the integrated GPU on dual-GPU
MacBooks, preventing VTEncoder from engaging hardware acceleration properly.
Setting to false prefers the discrete GPU for better encoding performance.

Author: AasishDairelSahayaGrinspan

apps/desktop/src-tauri/Info.plist

@@ -29,5 +29,7 @@
 	<string>Cap captures your screen as part of recording your Caps</string>
 	<key>NSCameraUseContinuityCameraDeviceType</key>
 	<true/>
+    <key>NSSupportsAutomaticGraphicsSwitching</key>
+    <false/>
 </dict>
 </plist>