[Keyboard] Added XW60 PCB (#6011)

* Added XW60 PCB

* Update keyboards/xw60/config.h

Co-Authored-By: fauxpark <fauxpark@gmail.com>

* Update keyboards/xw60/rules.mk

Co-Authored-By: fauxpark <fauxpark@gmail.com>

* Update keyboards/xw60/rules.mk

Co-Authored-By: fauxpark <fauxpark@gmail.com>

* Update keyboards/xw60/xw60.h

Co-Authored-By: fauxpark <fauxpark@gmail.com>

* Update keyboards/xw60/xw60.h

Co-Authored-By: fauxpark <fauxpark@gmail.com>

* Update keyboards/xw60/xw60.h

Co-Authored-By: fauxpark <fauxpark@gmail.com>

* Update rules.mk

* Removed redundant line

* Update keyboards/xw60/config.h

Co-Authored-By: noroadsleft <18669334+noroadsleft@users.noreply.github.com>

* Update keyboards/xw60/readme.md

Co-Authored-By: noroadsleft <18669334+noroadsleft@users.noreply.github.com>

keyboards/xw60/readme.md

@@ -0,0 +1,29 @@
+# XW60
+
+A 60% custom PCB for non-MX switches.
+
+![XW60V1 PCB](https://i.imgur.com/1KVSEZ0.jpg)
+
+### Supported Switches:
+
+##### XW60 V1
+
+ - ALPS SKCM/SKCL
+ - ALPS SKCP (IBM 5576 version)
+ - SMK SECOND GENERATION
+
+##### XW60 V2
+
+ - ALPS SKCM/SKCL
+ - ALPS SKCC
+ - Omron B3G-S
+ 
+Keyboard Maintainer: [Drclick](https://github.com/itsdrdick)  
+Hardware Supported: XW60 V1 & V2  
+Hardware Availability: https://shop159471890.taobao.com
+
+Make example for this keyboard (after setting up your build environment):
+
+    make xw60: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).