Keyboard: DC01 refactor and Configurator support (#3445)

* Arrow: matrix and keymap refactor

* Left: matrix and keymap refactor

* Numpad: matrix macro correction

* Numpad: add support for community layouts numpad_5x4 and ortho_5x4

* Right: matrix and keymap refactor

* DC01 global readme cleanup (minor grammar)

* DC01 global Configurator support

* Right: bugfixes for HHKB-style keymaps

keyboards/dc01/arrow/arrow.h

@@ -23,7 +23,7 @@
 // This a shortcut to help you visually see your layout.
 // The first section contains all of the arguments
 // The second converts the arguments into a two-dimensional array
-#define LAYOUT_ALL( \
+#define LAYOUT_all( \
     K00, K01, K02, \
     K10, K11, K12, \
                    \

keyboards/dc01/arrow/info.json

@@ -0,0 +1,12 @@
+{
+    "keyboard_name": "DC01 Arrow Cluster",
+    "url": "",
+    "maintainer": "qmk",
+    "width": 3,
+    "height": 5,
+    "layouts": {
+        "LAYOUT_all": {
+            "layout": [{"label":"Insert", "x":0, "y":0}, {"label":"Home", "x":1, "y":0}, {"label":"PgUp", "x":2, "y":0}, {"label":"Delete", "x":0, "y":1}, {"label":"End", "x":1, "y":1}, {"label":"PgDn", "x":2, "y":1}, {"label":"\u2191", "x":1, "y":3}, {"label":"\u2190", "x":0, "y":4}, {"label":"\u2193", "x":1, "y":4}, {"label":"\u2192", "x":2, "y":4}]
+        }
+    }
+}

keyboards/dc01/arrow/keymaps/default/keymap.c

@@ -16,7 +16,7 @@
 #include QMK_KEYBOARD_H
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
-[0] = LAYOUT_ALL( /* Base */
+[0] = LAYOUT_all( /* Base */
     KC_INS,  KC_HOME,  KC_PGUP, \
     KC_DEL,  KC_END,   KC_PGDN, \
                                 \

keyboards/dc01/arrow/readme.md

@@ -2,7 +2,7 @@
 
 ![DC01 Arrow Cluster](https://i.imgur.com/PTn0sp8.jpg)
 
-A hotpluggable four part keyboard which comes together with magnets and pogo pins! This is the arrow cluster
+A hotpluggable four part keyboard which comes together with magnets and pogo pins! This is the arrow cluster.
 
 Keyboard Maintainer: [Yiancar](https://github.com/yiancar)  
 Hardware Supported: Runs on an atmega32u4