Add the remaining, wide shapes for layouts

There should be a wide shape for
all available layouts, so those can be used
well on devices in horizonal orientation.

Part-of: <https://gitlab.gnome.org/World/Phosh/squeekboard/-/merge_requests/630>

data/keyboards/pin/us_wide.yaml

@@ -0,0 +1,20 @@
+---
+margins: { top: 4, side: 0, bottom: 4 }
+outlines:
+    default: { width: 120, height: 52 }
+
+views:
+    base:
+        - "1 2 3"
+        - "4 5 6"
+        - "7 8 9"
+        - "BackSpace 0 Return"
+
+buttons:
+    BackSpace:
+        icon: "edit-clear-symbolic"
+        action: erase
+    Return:
+        icon: "key-enter"
+        keysym: "Return"
+