maintainers: add hausken

maintainers/maintainer-list.nix

···
     githubId = 33969028;
     name = "Sebastian Hasler";
   };
+  hausken = {
+    name = "Hausken";
+    email = "[e-mail]>";
+    github = "hauskens";
+    githubId = 79340822;
+    keys = [ { fingerprint = "3582 5B85 66C8 4F36 45C7  EC42 809F 7938 9CB1 8650"; } ];
+  };
   havvy = {
     email = "[e-mail]";
     github = "Havvy";