== DETAILS
- Added entrypoints into `input/connect/joypad_connection.c` to allow
a max value to be passed in, instead of using single macro value
- Created a hand-off between the HID attach handler and the worker thread
- Created a pad initializer in `wiiu_hid.c` leveraging the new functionality
added to `joypad_connection.c`
== TESTING
Compiles cleanly. At best, doesn't do anything. Might crash--not ready
to test quite yet.