- added a new TclCommand named PlotObjects which will plot a list of FlatCAM objects

- made that after opening an object in FlatCAM it is not automatically plotted. If the user wants to plot it can use the TclCommands PlotAll or PlotObjects
- modified the TclCommands that open files to not plot the opened files automatically

tclCommands/TclCommandOpenGCode.py

@@ -45,5 +45,5 @@ class TclCommandOpenGCode(TclCommandSignaled):
             without -somename and  we do not have them in known arg_names
         :return: None or exception
         """
-
+        args['plot'] = False
         self.app.open_gcode(args['filename'], **args)