Add TLS support (only over tcp)

flake.nix

@@ -47,7 +47,7 @@
         proxies = mkOption {
           type = attrsOf (submodule ({config, ...}: {
             options = let
-              proto = enum ["udp" "tcp" "unix"];
+              proto = enum ["udp" "tcp" "unix" "tls"];
             in {
               enable = mkOption {
                 type = bool;