project: Added WireGuardIntentsExtensioniOS target and Siri capability

Signed-off-by: Alessio Nossa <alessio.nossa@gmail.com>

Sources/WireGuardApp/UI/iOS/WireGuard.entitlements

@@ -8,6 +8,8 @@
 	</array>
 	<key>com.apple.developer.networking.wifi-info</key>
 	<true/>
+	<key>com.apple.developer.siri</key>
+	<true/>
 	<key>com.apple.security.application-groups</key>
 	<array>
 		<string>group.$(APP_ID_IOS)</string>