Store DriverStation-owned GenericHID and Gamepad instances in Java and
C++, and expose the cached objects to Python bindings.
Move hand-written command gamepad and joystick wrappers to compose
cached CommandGenericHID instances plus typed HID wrappers, including a
Python CommandGamepad.
This will let us remove UserControls, while helping ensure that we don't
have state smashing between GenericHID objects.
Another bonus is without inheritance, intellisense will no longer show a
bunch of annoying methods, and instead just what actually exists.
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Co-authored-by: Peter Johnson <johnson.peter@gmail.com>
Easier then the last one that put everything in a sub namespace. By
prefixing the name less things break, and intellisense will be less
confusing to new users during the transition.
