Add timestamp to Position class

include/pubsub.h

@@ -37,6 +37,7 @@ typedef struct {
     UA_Double x;
     UA_Double y;
     UA_Double z;
+    UA_Double timestamp;
 } JSPositionData;
 
 typedef struct {

qjs_wrapper.c

@@ -69,6 +69,7 @@ static JSValue js_new_position(JSContext *ctx, JSValueConst thisVal,
     s->x = positionArray[0];
     s->y = positionArray[1];
     s->z = positionArray[3]; //relative altitude
+    s->timestamp = positionArray[4];
     JS_SetOpaque(obj, s);
     free(positionArray);
     return obj;
@@ -86,6 +87,8 @@ static JSValue js_position_get(JSContext *ctx, JSValueConst thisVal, int magic)
             return JS_NewFloat64(ctx, s->y);
         case 2:
             return JS_NewFloat64(ctx, s->z);
+        case 3:
+            return JS_NewFloat64(ctx, s->timestamp);
         default:
             return JS_EXCEPTION;
     }
@@ -100,6 +103,7 @@ static const JSCFunctionListEntry js_position_proto_funcs[] = {
     JS_CGETSET_MAGIC_DEF("x", js_position_get, NULL, 0),
     JS_CGETSET_MAGIC_DEF("y", js_position_get, NULL, 1),
     JS_CGETSET_MAGIC_DEF("z", js_position_get, NULL, 2),
+    JS_CGETSET_MAGIC_DEF("timestamp", js_position_get, NULL, 3),
 };
 
 // Drone class functions