macOS: add ITSAppUsesNonExemptEncryption to plist

This is required to publish app in App Store.
ITSEncryptionExportComplianceCode will be set during
deployment.

Change-Id: If4f07c003c193b8dd1f08589c4cb3b04e671def3

resources/Info.plist

@@ -36,5 +36,7 @@
 	<string>Jami requires to access your microphone to make calls and record audio</string>
 	<key>NSPhotoLibraryUsageDescription</key>
 	<string>Jami requires to access your photo library to show image on profile and send via chat</string>
+	<key>ITSAppUsesNonExemptEncryption</key>
+	<true/>
 </dict>
 </plist>