Refactoring and flexibility changes

* Split game module into game and game_interface
* Move core_lib to corelib
* Move miniwindow to corelib
* Introduce init.lua script for initializing the client, giving much more flexibility
* OTClient is no longer Application derived and is much simpler

modules/game_interface/styles/countwindow.otui

@@ -0,0 +1,41 @@
+CountWindow < MainWindow
+  id: countWindow
+  !text: tr('Move Stackable Item')
+  size: 196 112
+  @onEscape: self:destroy()
+
+  Label
+    !text: tr('Amount:')
+    width: 64
+    anchors.left: parent.left
+    anchors.top: parent.top
+    margin-top: 2
+
+  SpinBox
+    id: countSpinBox
+    anchors.left: prev.right
+    anchors.right: parent.right
+    anchors.top: parent.top
+
+  HorizontalScrollBar
+    id: countScrollBar
+    anchors.left: parent.left
+    anchors.right: parent.right
+    anchors.top: prev.bottom
+    margin-top: 8
+
+  Button
+    id: buttonOk
+    !text: tr('Ok')
+    width: 64
+    anchors.right: next.left
+    anchors.bottom: parent.bottom
+    margin-right: 5
+
+  Button
+    id: buttonCancel
+    !text: tr('Cancel')
+    width: 64
+    anchors.right: parent.right
+    anchors.bottom: parent.bottom
+    @onClick: self:getParent():destroy()