maintainers: add aware70

maintainers/maintainer-list.nix

···
     githubId = 206242;
     name = "Andreas Wiese";
   };
+  aware70 = {
+    name = "aware70";
+    github = "aware70";
+    githubId = 7832566;
+  };
   awwpotato = {
     email = "[e-mail]";
     github = "awwpotato";