docs: add Dimilkalathiya as a contributor for code (#628)

Adds @Dimilkalathiya as a contributor for code.

This was requested by AlexV525 [in this
comment](#619 (comment))

[skip ci]

---------

Co-authored-by: allcontributors[bot] <46447321+allcontributors[bot]@users.noreply.github.com>

.all-contributorsrc

@@ -259,6 +259,15 @@
       "contributions": [
         "bug"
       ]
+    },
+    {
+      "login": "Dimilkalathiya",
+      "name": "Dimil Kalathiya",
+      "avatar_url": "https://avatars.githubusercontent.com/u/102401667?v=4",
+      "profile": "https://github.com/Dimilkalathiya",
+      "contributions": [
+        "code"
+      ]
     }
   ],
   "contributorsPerLine": 7,

README.md

@@ -584,6 +584,7 @@ Many thanks to these wonderful people ([emoji key](https://allcontributors.org/d
       <td align="center" valign="top" width="14.28%"><a href="https://sqlturk.wordpress.com/"><img src="https://avatars.githubusercontent.com/u/12383547?v=4?s=50" width="50px;" alt="Cevheri"/><br /><sub><b>Cevheri</b></sub></a><br /><a href="#translation-cevheri" title="Translation">🌍</a></td>
       <td align="center" valign="top" width="14.28%"><a href="https://velog.io/@hee_mm_"><img src="https://avatars.githubusercontent.com/u/48482259?v=4?s=50" width="50px;" alt="mirimhee"/><br /><sub><b>mirimhee</b></sub></a><br /><a href="#translation-LIMMIHEE" title="Translation">🌍</a></td>
       <td align="center" valign="top" width="14.28%"><a href="https://amoshk.top"><img src="https://avatars.githubusercontent.com/u/32262985?v=4?s=50" width="50px;" alt="Amos"/><br /><sub><b>Amos</b></sub></a><br /><a href="https://github.com/fluttercandies/flutter_wechat_assets_picker/issues?q=author%3AAmosHuKe" title="Bug reports">🐛</a></td>
+      <td align="center" valign="top" width="14.28%"><a href="https://github.com/Dimilkalathiya"><img src="https://avatars.githubusercontent.com/u/102401667?v=4?s=50" width="50px;" alt="Dimil Kalathiya"/><br /><sub><b>Dimil Kalathiya</b></sub></a><br /><a href="https://github.com/fluttercandies/flutter_wechat_assets_picker/commits?author=Dimilkalathiya" title="Code">💻</a></td>
     </tr>
   </tbody>
 </table>