docs: add mattmassicotte as a contributor for code (#810)

* 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

@@ -328,6 +328,15 @@
  "contributions": [
  "code"
  ]
+ },
+ {
+ "login": "mattmassicotte",
+ "name": "Matt Massicotte",
+ "avatar_url": "https://avatars.githubusercontent.com/u/85322?v=4",
+ "profile": "https://www.massicotte.org",
+ "contributions": [
+ "code"
+ ]
  }
  ],
  "contributorsPerLine": 7,

README.md

@@ -3,7 +3,7 @@
 [![Netlify Status](https://api.netlify.com/api/v1/badges/005ef674-d103-4b05-a4d1-79413ce9d766/deploy-status)](https://app.netlify.com/sites/xcodeproj/deploys)
 
 <!-- ALL-CONTRIBUTORS-BADGE:START - Do not remove or modify this section -->
-[![All Contributors](https://img.shields.io/badge/all_contributors-36-orange.svg?style=flat-square)](#contributors-)
+[![All Contributors](https://img.shields.io/badge/all_contributors-37-orange.svg?style=flat-square)](#contributors-)
 <!-- ALL-CONTRIBUTORS-BADGE:END -->
 
 [![Swift Package Manager](https://img.shields.io/badge/swift%20package%20manager-compatible-brightgreen.svg)](https://swift.org/package-manager/)
@@ -187,6 +187,7 @@ Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/d
  </tr>
  <tr>
   <td align="center" valign="top" width="14.28%"><a href="https://ladislas.detoldi.me"><img src="https://avatars.githubusercontent.com/u/2206544?v=4?s=100" width="100px;" alt="Ladislas de Toldi"/><br /><sub><b>Ladislas de Toldi</b></sub></a><br /><a href="https://github.com/tuist/XcodeProj/commits?author=ladislas" title="Code">💻</a></td>
+  <td align="center" valign="top" width="14.28%"><a href="https://www.massicotte.org"><img src="https://avatars.githubusercontent.com/u/85322?v=4?s=100" width="100px;" alt="Matt Massicotte"/><br /><sub><b>Matt Massicotte</b></sub></a><br /><a href="https://github.com/tuist/XcodeProj/commits?author=mattmassicotte" title="Code">💻</a></td>
  </tr>
  </tbody>
 </table>