Move ProfileReader and ProfileWriter over to Cura itself.

Contributes to CURA-1667 Profile import/export

cura/ProfileWriter.py

@@ -0,0 +1,25 @@
+# Copyright (c) 2015 Ultimaker B.V.
+# Uranium is released under the terms of the AGPLv3 or higher.
+
+from UM.PluginObject import PluginObject
+
+##  Base class for profile writer plugins.
+#
+#   This class defines a write() function to write profiles to files with.
+class ProfileWriter(PluginObject):
+    ##  Initialises the profile writer.
+    #
+    #   This currently doesn't do anything since the writer is basically static.
+    def __init__(self):
+        super().__init__()
+
+    ##  Writes a profile to the specified file path.
+    #
+    #   The profile writer may write its own file format to the specified file.
+    #
+    #   \param path \type{string} The file to output to.
+    #   \param profile \type{Profile} The profile to write to the file.
+    #   \return \code True \endcode if the writing was successful, or \code
+    #   False \endcode if it wasn't.
+    def write(self, path, node):
+        raise NotImplementedError("Profile writer plugin was not correctly implemented. No write was specified.")