Add Alter Keyboard (#9579)

* Create Alter folder

* Revert "Create Alter folder"

This reverts commit 361103b821dbb22957b66cdedb0d11f996def71c.

* Add Alter keyboard

* Fixed keymap.c

* Fixed another issue on the keymap.c

* Updated the files based on the comments

* Edited default keymap and enabled rgbanimations on config.h

* Updated the info.json

keyboards/nightly_boards/alter/rev1/readme.md

@@ -0,0 +1,12 @@
+# Alter
+
+An Alice layout keyboard
+
+* 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/alter/rev1:default
+
+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).