docs: add Nickson256 as a contributor for code (#893)

* docs: update README.md [skip ci]

* docs: update .all-contributorsrc [skip ci]

---------

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

Author: allcontributors[bot]

.all-contributorsrc

@@ -404,6 +404,15 @@
       "contributions": [
         "translation"
       ]
+    },
+    {
+      "login": "Nickson256",
+      "name": "Nickson N",
+      "avatar_url": "https://avatars.githubusercontent.com/u/115783204?v=4",
+      "profile": "https://github.com/Nickson256",
+      "contributions": [
+        "code"
+      ]
     }
   ],
   "contributorsPerLine": 7,

README.md

@@ -205,6 +205,7 @@ Moox is made by these nice people, and bots ...
     </tr>
     <tr>
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/TamilNeram"><img src="https://avatars.githubusercontent.com/u/67970539?v=4?s=100" width="100px;" alt="தமிழ் நேரம்"/><br /><sub><b>தமிழ் நேரம்</b></sub></a><br /><a href="#translation-TamilNeram" title="Translation">🌍</a></td>
+      <td align="center" valign="top" width="14.28%"><a href="https://github.com/Nickson256"><img src="https://avatars.githubusercontent.com/u/115783204?v=4?s=100" width="100px;" alt="Nickson N"/><br /><sub><b>Nickson N</b></sub></a><br /><a href="https://github.com/mooxphp/moox/commits?author=Nickson256" title="Code">💻</a></td>
     </tr>
   </tbody>
 </table>