Add NestJS community (#180)

- Add NestJS community metadata
- Add NestJS svg logo

communities.json

@@ -665,6 +665,13 @@
       "quote": "Using Discord to help Users connect to 1000's of MUD Servers and Mudlet developers to connect to each other...",
       "inviteCode": "rmFG7Wr",
       "githubUrl": "https://github.com/Mudlet/Mudlet"
+    },
+    {
+      "logo": "nestjs.svg",
+      "title": "NestJS",
+      "quote": "Discord both strengthened our community and dramatically improved discussion amongst the developers.",
+      "inviteCode": "G7Qnnhy",
+      "githubUrl": "https://github.com/nestjs"
     }
   ]
 }