More keys should be supported by the configuration file

[marvelph]

Is your feature request related to a problem? Please describe.
Some of the keys that can be set on the shortcut tab of the Preferences screen cannot be specified in the configuration file.

Describe the solution you'd like
It is desired that the following special keys can be specified.

esc
tab
delete
forward-delete
home
end
page-up
page-down
keypad-clear
keypad-equal
keypad-divide
keypad-multiply
keypad-minus
keypad-plus
keypad-enter
keypad-9
keypad-8
keypad-7
keypad-6
keypad-5
keypad-4
keypad-3
keypad-2
keypad-1
keypad-0
keypad-comma
keypad-period

Additional context
This will be appreciated by users of full-size keyboards who want to manage their settings by text.