handwired/ortho5x13: layout macro refactor

Discovered the LAYOUT_compact macro didn't compile in QMK Configurator. Realized the reason for that was that it automatically prepends `KC_` to every keycode received.

Renamed the macro to LAYOUT_kc so Configurator will ignore it.

Also changed the file to use the #pragma once include guard because I was in here anyway.

keyboards/handwired/ortho5x13/ortho5x13.h

@@ -1,5 +1,4 @@
-#ifndef ORTHO5X13_H
+#pragma once
-#define ORTHO5X13_H
 
 #include "quantum.h"
 
@@ -18,7 +17,7 @@
   { k40, k41, k42, k43, k44, k45, KC_NO, k47, k48, k49, k4a, k4b, k4c } \
 }
 
-#define LAYOUT_compact( \
+#define LAYOUT_kc( \
   k00, k01, k02, k03, k04, k05, k06, k07, k08, k09, k0a, k0b, k0c, \
   k10, k11, k12, k13, k14, k15, k16, k17, k18, k19, k1a, k1b, k1c, \
   k20, k21, k22, k23, k24, k25, k26, k27, k28, k29, k2a, k2b, k2c, \
@@ -32,5 +31,3 @@
   { KC_##k30, KC_##k31, KC_##k32, KC_##k33, KC_##k34, KC_##k35, KC_##k35, KC_##k37, KC_##k38, KC_##k39, KC_##k3a, KC_##k3b, KC_##k3c }, \
   { KC_##k40, KC_##k41, KC_##k42, KC_##k43, KC_##k44, KC_##k45, KC_NO,    KC_##k47, KC_##k48, KC_##k49, KC_##k4a, KC_##k4b, KC_##k4c } \
 }
-
-#endif