-updated wasm build scripts

-multitheaded wasm tests
-updated dub.json
-fixed thread pool assert issue
-added windows libraries
-added demos:
 *launcher
 *simple
 *snake
 *space invaders (WIP)
 *statistics window
 *changable gui styles
 *tips window
 *profile window
 *demo window with automatic generation
 *multithreaded job updater

demos/source/gui/system.d

@@ -0,0 +1,11 @@
+module gui.system;
+
+import ecs.system;
+
+struct SystemGUI
+{
+    const (char)* name;
+    System* system;
+
+    bool enabled = true;
+}