maintainers: add ornxka

maintainers/maintainer-list.nix

···
     githubId = 101514;
     name = "Orivej Desh";
   };
+  ornxka = {
+    email = "[e-mail]";
+    github = "ornxka";
+    githubId = 52086525;
+    name = "ornxka";
+  };
   oro = {
     email = "[e-mail]";
     github = "oro";