Port embedded sample from Classic to Phoenix

Partly addresses issue #1336

samples/embedded/embedded_sample.py

@@ -0,0 +1,29 @@
+import wx
+from wx.py import shell, version
+
+class MyPanel(wx.Panel):
+    """ The wxPython shell application """
+    def __init__(self, parent):
+        # super makes the same as wx.Panel.__init__(self, parent, etc..)
+        # but prepares for Python 3.0 among other things...
+        super(MyPanel, self).__init__(parent, -1, \
+            style = wx.BORDER_NONE | wx.MAXIMIZE)
+
+        text = wx.StaticText(self, -1,
+                            "Everything on this side of the splitter comes from Python.")
+        
+        intro = 'Welcome To PyCrust %s - The Flakiest Python Shell' % version.VERSION
+
+        # the Pycrust shell object
+        # Ugly hack to overwrite wx.CallAfter, as it requires wx.GetApp()
+        # to return != None
+        wx.CallAfter = lambda x, y : (x, y)
+        pycrust = shell.Shell(self,-1, introText = intro)
+        # pycrust = wx.TextCtrl(self, -1, intro)
+
+        sizer = wx.BoxSizer(wx.VERTICAL)
+        sizer.Add(text, 0, wx.EXPAND|wx.ALL, 10)
+        sizer.Add(pycrust, 1, wx.EXPAND|wx.BOTTOM|wx.LEFT|wx.RIGHT, 10)
+
+        self.SetSizer(sizer)
+