Go to Object-Mode when click on empty space 1.0.0 for Maya (maya script)

Run

objectModeSpecial;

now if you are in component mode - just clear selection and you'll automatically goes to the objectMode.

Run

objectModeSpecial;

again and this function will be disabled.

Put text

objectModeSpecial;

in script userSetup.mel in your scripts folder (create this script-file if it not exists) and Maya will run this script automatically when starts.