Manages the toolbox tools in a menu.
Loads all .mel files located in the omtoolbox/scripts dir into a GUI
[settings] and lets you load/unload tools into the menu and select for
which maya mode the different tools should appear in the menu.
To use your own custom tool with the menu system, make sure that
the tool gets executed by a string matching the filename (without ".mel).
Place your tool in the omtoolbox/scripts dir and load it from the settings window.