Onekey cleanup (#13786)

keyboards/handwired/onekey/keymaps/console/keymap.c

@@ -0,0 +1,20 @@
+#include QMK_KEYBOARD_H
+
+enum custom_keycodes {
+    KC_HELLO = SAFE_RANGE,
+};
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    LAYOUT_ortho_1x1(KC_HELLO)
+};
+
+bool process_record_user(uint16_t keycode, keyrecord_t *record) {
+    switch (keycode) {
+        case KC_HELLO:
+            if (record->event.pressed) {
+                printf("Hello world!\n");
+            }
+            return false;
+    }
+    return true;
+}