maintainers: add fangpen

maintainers/maintainer-list.nix

@@ -6469,6 +6469,15 @@
     githubId = 225893;
     name = "James Cook";
   };
+  fangpen = {
+    email = "hello@fangpenlin.com";
+    github = "fangpenlin";
+    githubId = 201615;
+    name = "Fang-Pen Lin";
+    keys = [{
+      fingerprint = "7130 3454 A7CD 0F0A 941A  F9A3 2A26 9964 AD29 2131";
+    }];
+  };
   farcaller = {
     name = "Vladimir Pouzanov";
     email = "farcaller@gmail.com";