Add code for drone splitting, lacking a little amount selection popup

atm

gui/builtinContextMenus/__init__.py

@@ -1 +1 @@
-__all__ = ["moduleAmmoPicker", "itemStats", "damagePattern", "marketJump"]
+__all__ = ["moduleAmmoPicker", "itemStats", "damagePattern", "marketJump", "droneSplit"]

gui/builtinContextMenus/droneSplit.py

@@ -0,0 +1,24 @@
+from gui.contextMenu import ContextMenu
+from gui.itemStats import ItemStatsDialog
+import gui.mainFrame
+import gui.fittingView
+import service
+import wx
+
+class DroneSplit(ContextMenu):
+    def __init__(self):
+        self.mainFrame = gui.mainFrame.MainFrame.getInstance()
+
+    def display(self, context, selection):
+        return context in ("drone") and selection[0].amount > 1
+
+    def getText(self, context, selection):
+        return "Split stack"
+
+    def activate(self, context, selection, i):
+        sFit = service.Fit.getInstance()
+        fitID = self.mainFrame.getActiveFit()
+        sFit.splitDroneStack(fitID, selection[0], 1)
+        wx.PostEvent(self.mainFrame, gui.fittingView.FitChanged(fitID=fitID))
+
+DroneSplit.register()