maintainers: add akho

maintainers/maintainer-list.nix

···
     githubId = 1318982;
     name = "Anders Claesson";
   };
+  akho = {
+    name = "Alexander Khodyrev";
+    email = "[e-mail]";
+    github = "akho";
+    githubId = 104951;
+  };
   akru = {
     email = "[e-mail]";
     github = "akru";