Added tuning sync for headhlights and turbo, added siren silence (B key)

Client/Tuning/sirensilence.js

@@ -0,0 +1,15 @@
+mp.keys.bind(0x42, true, _ => {
+    mp.events.callRemote("keyPress:B:toggleSiren");
+});
+
+mp.events.add('toggleVehicleSiren', (vehicle, state) => {
+    vehicle.setSirenSound(state);
+});
+
+mp.events.add('entityStreamIn', (entity) => {
+    if (entity.isAVehicle()) {
+        var state = entity.getVariable("sirenSound");
+        if (state === undefined) return;
+        entity.setSirenSound(state);
+    }
+});