docs: add Scarsz as a contributor (#2266)

* docs: update README.md

* docs: create .all-contributorsrc

.all-contributorsrc

@@ -5,6 +5,16 @@
   "imageSize": 100,
   "commit": false,
   "contributors": [
+    {
+      "login": "Scarsz",
+      "name": "Austin Shapiro",
+      "avatar_url": "https://avatars1.githubusercontent.com/u/7691988?v=4",
+      "profile": "https://scarsz.me",
+      "contributions": [
+        "bug",
+        "code"
+      ]
+    },
     {
       "login": "marvinlehmann",
       "name": "Marvin Lehmann",