docs: add g2p as a contributor (#309)

.all-contributorsrc

@@ -247,6 +247,15 @@
         "doc",
         "test"
       ]
+    },
+    {
+      "login": "g2p",
+      "name": "Gabriel de Perthuis",
+      "avatar_url": "https://avatars1.githubusercontent.com/u/61678?v=4",
+      "profile": "https://github.com/g2p",
+      "contributions": [
+        "code"
+      ]
     }
   ],
   "contributorsPerLine": 7

README.md

@@ -215,6 +215,7 @@ Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/d
   </tr>
   <tr>
     <td align="center"><a href="https://github.com/nickwb"><img src="https://avatars2.githubusercontent.com/u/594211?v=4" width="100px;" alt="Nick Young"/><br /><sub><b>Nick Young</b></sub></a><br /><a href="https://github.com/starship/starship/commits?author=nickwb" title="Code">💻</a> <a href="https://github.com/starship/starship/commits?author=nickwb" title="Documentation">📖</a> <a href="https://github.com/starship/starship/commits?author=nickwb" title="Tests">⚠️</a></td>
+    <td align="center"><a href="https://github.com/g2p"><img src="https://avatars1.githubusercontent.com/u/61678?v=4" width="100px;" alt="Gabriel de Perthuis"/><br /><sub><b>Gabriel de Perthuis</b></sub></a><br /><a href="https://github.com/starship/starship/commits?author=g2p" title="Code">💻</a></td>
   </tr>
 </table>