[Keyboard] Add LATE-9 keyboard (#13966)

keyboards/late9/rev1/info.json

@@ -0,0 +1,18 @@
+{
+    "keyboard_name": "LATE-9",
+    "keyboard_folder": "late9/rev1",
+    "url": "https://github.com/rookiebwoy/late-9)",
+    "maintainer": "rookiebwoy",
+    "layouts": {
+        "LAYOUT": {
+            "layout": [
+                {"x":0, "y":0}, {"x":1, "y":0}, {"x":2, "y":0},
+                {"x":0, "y":1}, {"x":1, "y":1}, {"x":2, "y":1},
+                {"x":0, "y":2}, {"x":1, "y":2}, {"x":2, "y":2},
+                {"x":0, "y":3}, {"x":1, "y":3}, {"x":2, "y":3},
+                {"x":0, "y":4}, {"x":1, "y":4}, {"x":2, "y":4},
+                {"x":0, "y":5}, {"x":1, "y":5}, {"x":2, "y":5}
+            ]
+        }
+    }
+}