[keyboard] Add [n]2 support (#9862)

* Create Alter folder

* Revert "Create Alter folder"

This reverts commit 361103b821dbb22957b66cdedb0d11f996def71c.

* Add n2 keyboard

* Apply suggestions from code review

Edited config.h, keymap.c, readme.md, and rules.mk

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

* Update readme.md

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

keyboards/nightly_boards/n2/info.json

@@ -0,0 +1,12 @@
+{
+    "keyboard_name": "[n]2",
+    "url": "",
+    "maintainer": "Neil Brian Ramirez",
+    "width": 1,
+    "height": 2,
+    "layouts": {
+        "LAYOUT": {
+            "layout": [{"x":0, "y":0}, {"x":0, "y":1}]
+        }
+    }
+}