[Keyboard] Add cKeys Washington keyboard (#7570)

* Add cKeys Washington keyboard

* Add suggested changes

* Fix encoder direction

* Remove unneeded file

* Update config.h

* Update washington.c

keyboards/ckeys/washington/info.json

@@ -0,0 +1,12 @@
+{
+    "keyboard_name": "washington",
+    "url": "https://keypcb.xyz/ViewPage/Washington",
+    "maintainer": "merlin04",
+    "width": 4.5,
+    "height": 3,
+    "layouts": {
+        "LAYOUT": {
+            "layout": [{"x":1.5, "y":0}, {"x":2.5, "y":0}, {"x":3.5, "y":0}, {"x":1.5, "y":1}, {"x":2.5, "y":1}, {"x":3.5, "y":1}, {"x":0, "y":0.75}, {"x":0.5, "y":1.75}, {"x":1.5, "y":2}]
+        }
+    }
+}