Create a KeyboardKeySet class

[romadanskiy]

There is code duplication in the project with the definition of sets of keyboard keys (for example, a collection of numpad buttons for NumpadListener class and for tests NumpadListenerSubscribeTests and NumpadListenerUnsubscribeTests).

The proposed solution is to make a KeyboardKeySet class that will provide collections of specific keyboard keys (numpad keys, number keys, function keys, etc.).

Advantages:

• Reduce code duplication.
• Allows users to use ready-made key sets to create their own logic.

Proposed key sets:

• Numpad keys
• Number keys (including numpad keys)
• Function keys (F1, F2, ...)
• Arrow keys
• Navigation keys (Home, End, Page Up, Page Down)
• Multimedia keys (Play/Pause, Stop, Previous Track, Next Track, Volume Up, Volume Down, Mute)
• Editing keys (Backspace, Enter, Caps Lock, Insert, Delete)
• Special keys (Control, Alt, Fn, Tab, Esc)