[Keyboard] Adding Novem keyboard (macropad) and demo layout (#8781)

* Adding Novem keyboard (macropad) and demo layout

* Making changes suggested during pull request

* Removing keyboards/novem/keymaps/default/config.h as suggested during the pull request

* Moving keyboard to the handwired folder and changing the build line from readme in order to reflect this new location

keyboards/handwired/novem/info.json

@@ -0,0 +1,18 @@
+{
+    "keyboard_name": "novem",
+    "url": "",
+    "maintainer": "Jose I. Martinez",
+    "width": 3,
+    "height": 2,
+    "layouts": {
+        "LAYOUT": {
+            "layout": [
+                {"label":"k00", "x":0, "y":0},
+                {"label":"k01", "x":1, "y":0},
+                {"label":"k02", "x":2, "y":0},
+                {"label":"k10", "x":0, "y":1, "w":1.5},
+                {"label":"k12", "x":1.5, "y":1, "w":1.5}
+            ]
+        }
+    }
+}