add david-fed as a contributor for code (#1229)

* update README.md [skip ci]

* update .all-contributorsrc [skip ci]

---------

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

.all-contributorsrc

@@ -1209,6 +1209,15 @@
         "doc",
         "test"
       ]
+    },
+    {
+      "login": "david-fed",
+      "name": "David",
+      "avatar_url": "https://avatars.githubusercontent.com/u/47917339?v=4",
+      "profile": "https://github.com/david-fed",
+      "contributions": [
+        "code"
+      ]
     }
   ],
   "contributorsPerLine": 7,

README.md

@@ -283,6 +283,7 @@ This library could only exist thanks to the dedication of many volunteers around
       <td align="center" valign="top" width="14.28%"><a href="https://www.scottsmitelli.com"><img src="https://avatars.githubusercontent.com/u/935080?v=4?s=100" width="100px;" alt="Scott Smitelli"/><br /><sub><b>Scott Smitelli</b></sub></a><br /><a href="https://github.com/py-pdf/fpdf2/issues?q=author%3Asmitelli" title="Bug reports">🐛</a></td>
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/lcgeneralprojects"><img src="https://avatars.githubusercontent.com/u/102996639?v=4?s=100" width="100px;" alt="lcgeneralprojects"/><br /><sub><b>lcgeneralprojects</b></sub></a><br /><a href="https://github.com/py-pdf/fpdf2/issues?q=author%3Alcgeneralprojects" title="Bug reports">🐛</a> <a href="https://github.com/py-pdf/fpdf2/commits?author=lcgeneralprojects" title="Code">💻</a></td>
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/Makaze"><img src="https://avatars.githubusercontent.com/u/2280429?v=4?s=100" width="100px;" alt="Christopher Lane"/><br /><sub><b>Christopher Lane</b></sub></a><br /><a href="https://github.com/py-pdf/fpdf2/commits?author=Makaze" title="Documentation">📖</a> <a href="https://github.com/py-pdf/fpdf2/commits?author=Makaze" title="Tests">⚠️</a></td>
+      <td align="center" valign="top" width="14.28%"><a href="https://github.com/david-fed"><img src="https://avatars.githubusercontent.com/u/47917339?v=4?s=100" width="100px;" alt="David"/><br /><sub><b>David</b></sub></a><br /><a href="https://github.com/py-pdf/fpdf2/commits?author=david-fed" title="Code">💻</a></td>
     </tr>
   </tbody>
 </table>