Six Pack and ortho_ layout updates (#13587)

Co-authored-by: Ryan <fauxpark@gmail.com>
Co-authored-by: Suschman <suschman@gmail.com>

layouts/default/ortho_2x3/default_ortho_2x3/keymap.c

@@ -0,0 +1,15 @@
+#include QMK_KEYBOARD_H
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    /*
+     * ┌───┬───┬───┐
+     * │ A │ B │ C │
+     * ├───┼───┼───┤
+     * │ D │ E │ F │
+     * └───┴───┴───┘
+     */
+    [0] = LAYOUT_ortho_2x3(
+        KC_A,    KC_B,    KC_C,
+        KC_D,    KC_E,    KC_F
+    )
+};