[Keyboard] Add the [n]40-o (#11286)

* Create Alter folder

* Revert "Create Alter folder"

This reverts commit 361103b821dbb22957b66cdedb0d11f996def71c.

* Added the n40_o folder

* Edited info.json, n40_o.h and rules.mk

* Edited readme as per comment

keyboards/nightly_boards/n40_o/readme.md

@@ -0,0 +1,20 @@
+# Nightly Boards [n]40-o
+
+![[n]40-o](https://i.imgur.com/CFIKCXNl.jpg)
+
+A 4x12 Ortholinear keyboard with left-side macro keys that supports three rotary encoders
+
+* Keyboard Maintainer: [Neil Brian Ramirez](https://github.com/NightlyBoards)
+* Hardware Supported: atmega32u4
+
+Make example for this keyboard (after setting up your build environment):
+
+    make nightly_boards/n40_o:default
+	
+Flashing example for this keyboard:
+
+    make nightly_boards/n40_o:default:flash
+
+You can enter bootloader mode by pressing the physical reset button at the back of the pcb or by holding the upper left key/rotary encoder while plugging the usb cable.
+
+See the [build environment setup](https://docs.qmk.fm/#/getting_started_build_tools) and the [make instructions](https://docs.qmk.fm/#/getting_started_make_guide) for more information. Brand new to QMK? Start with our [Complete Newbs Guide](https://docs.qmk.fm/#/newbs).