handwired/magicforce61 Refactor (#5459)

handwired/magicforce61 Refactor (#5459)

* handwired/magicforce61: refactor

Renamed layout macro KEYMAP to LAYOUT.

Keymap now uses #include QMK_KEYBOARD_H.

Refactored the default keymap to use non-auto-prepended keycodes per QMK standard.

Deleted deprecated action_get_macro block (was unused).

* handwired/magicforce61: Configurator support

* handwired/magicforce61: readme cleanup

Restructured the readme to be more similar to current QMK template.

* handwired/magicforce61: replace missing image in readme

Replaced the missing wiring image (error 404) with a table.

* handwired/magicforce61: rename readme to lowercase

* Convert config.h to #pragma once include guard