finished circle keyboard implementation and update window size

src-tauri/tauri.conf.json

@@ -14,7 +14,11 @@
       {
         "title": "keeb",
         "width": 800,
-        "height": 600
+        "height": 700,
+        "minWidth": 800,
+        "minHeight": 700,
+        "resizable": true,
+        "center": true
       }
     ],
     "security": {