Extract Particles code to an independent library

QtQuick clients that do not use particles features should not have
to load these classes.

Task-number: QTBUG-25178
Change-Id: Ib15f7655dc4d821595e06f9160d2770375279027
Reviewed-by: Glenn Watson <glenn.watson@nokia.com>

src/quick/particles/qquickparticlesmodule_p.h → src/particles/qquickparticlesmodule_p.h

@@ -42,13 +42,13 @@
 #ifndef QQUICKPARTICLESMODULE_H
 #define QQUICKPARTICLESMODULE_H
 
-#include <private/qtquickglobal_p.h>
+#include <private/qtquickparticlesglobal_p.h>
 
 QT_BEGIN_HEADER
 
 QT_BEGIN_NAMESPACE
 
-class Q_QUICK_PRIVATE_EXPORT QQuickParticlesModule
+class Q_QUICKPARTICLES_PRIVATE_EXPORT QQuickParticlesModule
 {
 public:
     static void defineModule();