Add self to maintainers

lib/maintainers.nix

···
   romildo = "José Romildo Malaquias <[e-mail]>";
   rszibele = "Richard Szibele <[e-mail]>";
   rushmorem = "Rushmore Mushambi <[e-mail]>";
+  rvl = "Rodney Lorrimar <[e-mail]>";
   rycee = "Robert Helgesson <[e-mail]>";
   samuelrivas = "Samuel Rivas <[e-mail]>";
   sander = "Sander van der Burg <[e-mail]>";