docs: Add mirai elevated button documentation

website/docs/widgets/elevated_button.md

@@ -0,0 +1,32 @@
+# Elevated Button
+
+The Mirai Elevated Button allows you to build a Flutter elevated button widget using JSON.
+To know more about the elevated button widget in Flutter, refer to the [official documentation](https://api.flutter.dev/flutter/material/ElevatedButton-class.html).
+
+## Properties
+
+| Property     | Type                    | Description                                                                        |
+|--------------|-------------------------|------------------------------------------------------------------------------------|
+| onPressed    | `Map<String, dynamic>?` | The callback that is called when the button is tapped.                             |
+| style        | `MiraiButtonStyle?`     | The style to apply to the button.                                                  |
+| autofocus    | `bool`                  | Whether the button should be focused when the page is loaded. Defaults to `false`. |
+| clipBehavior | `Clip`                  | Determines how the content should be clipped. Defaults to `Clip.none`.             |
+| child        | `Map<String, dynamic>`  | The widget to display inside the button.                                           |
+
+
+## Example JSON
+
+```json
+{
+  "type": "elevatedButton",
+  "onPressed": {},
+  "style": {
+    "backgroundColor": "primary",
+    "foregroundColor": "#FFFFFF"
+  },
+  "child": {
+    "type": "text",
+    "data": "Click Me!"
+  }
+}
+```