Add Keyboard Shortcuts

[gbroques]

We should consider adding keyboard shortcuts to commands on the main toolbar.

However, we want to be careful not to clash with existing FreeCAD or operating system level keyboard shortcuts.

The below table is a proposal, and needs more research.

Command	Keyboard Shortcut
Add Frame	Ctrl + Shift + F
Add Universal X Axis	Ctrl + Shift + X
Add Universal X Axis	Ctrl + Shift + Y
Add Universal X Axis	Ctrl + Shift + Z
Add Extruder	Ctrl + Shift + E
Add Heated Bed	Ctrl + Shift + B

An example of how this can be done technically via Accel:

class My_Command_Class():

    def GetResources(self):
        return {'Pixmap'  : 'My_Command_Icon', # the name of a svg file available in the resources
                'Accel' : "Shift+S", # a default shortcut (optional)
                'MenuText': "My New Command"
                'ToolTip' : "What my new command does"}