docs: add tcawlfield as a contributor for code (#3067)

* docs: update README.md [skip ci]

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

---------

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

.all-contributorsrc

@@ -438,6 +438,15 @@
       "contributions": [
         "code"
       ]
+    },
+    {
+      "login": "tcawlfield",
+      "name": "Topher Cawlfield",
+      "avatar_url": "https://avatars.githubusercontent.com/u/4094385?v=4",
+      "profile": "https://github.com/tcawlfield",
+      "contributions": [
+        "code"
+      ]
     }
   ],
   "contributorsPerLine": 7,

README.md

@@ -223,6 +223,7 @@ Thanks especially to the gracious help of Awkward Array contributors (including
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/jrueb"><img src="https://avatars.githubusercontent.com/u/30041073?v=4?s=100" width="100px;" alt="Jonas Rübenach"/><br /><sub><b>Jonas Rübenach</b></sub></a><br /><a href="https://github.com/scikit-hep/awkward/commits?author=jrueb" title="Code">💻</a></td>
       <td align="center" valign="top" width="14.28%"><a href="http://blog.jling.dev"><img src="https://avatars.githubusercontent.com/u/5306213?v=4?s=100" width="100px;" alt="Jerry Ling"/><br /><sub><b>Jerry Ling</b></sub></a><br /><a href="https://github.com/scikit-hep/awkward/commits?author=Moelf" title="Documentation">📖</a></td>
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/lobis"><img src="https://avatars.githubusercontent.com/u/35803280?v=4?s=100" width="100px;" alt="Luis Antonio Obis Aparicio"/><br /><sub><b>Luis Antonio Obis Aparicio</b></sub></a><br /><a href="https://github.com/scikit-hep/awkward/commits?author=lobis" title="Code">💻</a></td>
+      <td align="center" valign="top" width="14.28%"><a href="https://github.com/tcawlfield"><img src="https://avatars.githubusercontent.com/u/4094385?v=4?s=100" width="100px;" alt="Topher Cawlfield"/><br /><sub><b>Topher Cawlfield</b></sub></a><br /><a href="https://github.com/scikit-hep/awkward/commits?author=tcawlfield" title="Code">💻</a></td>
     </tr>
   </tbody>
 </table>