Add Lutris to communities

communities.json

@@ -598,5 +598,12 @@
       "inviteCode": "adafruit",
       "githubUrl": "https://github.com/adafruit"
     }
+    {
+      "logo": "lutris.png",
+      "title": "Lutris",
+      "quote": "Discord has allowed us to build a great community of passionate Linux gamers and provide better support for Lutris.",
+      "inviteCode": "Pnt5CuY",
+      "githubUrl": "https://github.com/lutris"
+    }
   ]
 }