[Keyboard] Update 1upkeyboards/super16 with code from vendor (#5645)
* readme formatting
* cleanup rules.mk
* update config.h
* add numpad layout
* Update default keymap
* cleanup rules
* disable console and commands to fit the bootloader
* cleanup whitespace
* revert readme changes
* revert changes to config.h
* remove unused keycodes
* add LAYOUTS to rules.mk
* remove redundant config setting
Co-Authored-By: jeffmhastings <jeffmhastings@gmail.com>