Refactor/eagle viper with new layouts for QMK Configurator (#2659)

Refactor/eagle viper with new layouts for QMK Configurator (#2659)

* rename KEYMAP to LAYOUT_ALL

* Standard Layout Eagle Refactor

New layout LAYOUT_EAGLE
Got standard layout backspace working

* Remove split right shift support for standard layout eagle

* add back the KC_NO for split right shift

* Remove KC_NO from bottom row to support standard 60 layout

* Fix formatting issues with mechmerlin keymap

* remove extra KC_NO from split right shift in LAYOUT_EAGLE

* Preliminary checkin for new layout LAYOUT_VIPER

* Remove some of the KC_NO from the layout

* Fix formatting

* missed a KC_NO for the LAYOUT_EAGLE

* remove KC_NO from enter key of LAYOUT_VIPER

* some more formatting changes

* Default 60 with split left right shift and backspace

* add info.json layouts to match the new LAYOUTs

* change formatting of LAYOUT names

* propogate renames to info.json