Fix: Add required entitlements for file access

The app was crashing with REPORT_APP_ENTITLEMENTS_INSUFFICIENT when
trying to open file/folder dialogs from the Welcome screen.

Added necessary entitlements:
- com.apple.security.app-sandbox: Enable App Sandbox
- com.apple.security.files.user-selected.read-write: Allow user-selected file access
- com.apple.security.files.bookmarks.app-scope: Allow bookmark persistence
- com.apple.security.network.client: Enable network access for extensions/LSP

This resolves the crash when clicking "Open File or Folder" button.

Author: vksvicky

CodeEdit/CodeEdit.entitlements

@@ -2,6 +2,14 @@
 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
 <dict>
+	<key>com.apple.security.app-sandbox</key>
+	<true/>
+	<key>com.apple.security.files.user-selected.read-write</key>
+	<true/>
+	<key>com.apple.security.files.bookmarks.app-scope</key>
+	<true/>
+	<key>com.apple.security.network.client</key>
+	<true/>
 	<key>com.apple.security.application-groups</key>
 	<array>
 		<string>app.codeedit.CodeEdit.shared</string>