maintainers: add n0emis

maintainers/maintainer-list.nix

···
     githubId = 9636071;
     name = "Myrl Hex";
   };
+  n0emis = {
+    email = "[e-mail]";
+    github = "n0emis";
+    githubId = 22817873;
+    name = "Ember Keske";
+  };
   nadrieril = {
     email = "[e-mail]";
     github = "nadrieril";