[Keyboard] add 3w6 (#13746)

keyboards/3w6/rev1/readme.md

@@ -0,0 +1,32 @@
+# 3W6
+
+![3W6](https://raw.githubusercontent.com/weteor/3W6/main/images/3w6_1s.jpg)
+![3W6](https://raw.githubusercontent.com/weteor/3W6/main/images/3w6_3s.jpg)
+
+The 3w6 is a low profile, split ortholinear keyboard with 36 keys.
+
+* Rev1: 
+  - onboard microcontroller (ATMega32U4)
+  - USB-C connector Board <-> PC
+  - USB-C connectors between both split halfs
+  - choc spacing (18x17mm)
+  - aggressive pinky stagger
+  - support for Choc V1 switches
+
+---
+
+* Keyboard Maintainer: [weteor](https://github.com/weteor)
+* Hardware Supported: 
+    * 3w6 rev1
+* Hardware Availability (this is an older version, current revision is rev2): 
+    * make one yourself: [Design and Productionfiles](https://github.com/weteor/3w6)
+---
+To reach the bootloader, connect the board to the PC and push the reset button on left half.
+
+Make examples for this keyboard (after setting up your build environment):
+
+    make 3w6/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).