feat(reverse-proxy): add Pikachu reverse proxy guest

guests/reverse-proxy.nix

@@ -0,0 +1,51 @@
+{
+  config,
+  lib,
+  my,
+  ...
+}:
+let
+  legacyBackend = "http://10.23.20.32";
+  legacyHosts = [
+    "games.alexion.dev"
+    "git.alexion.dev"
+    "music.alexion.dev"
+    "photos.alexion.dev"
+    "plex.alexion.dev"
+    "servers.alexion.dev"
+    "todo.alexion.dev"
+    "wings.alexion.dev"
+  ];
+  legacyRoutes = lib.listToAttrs (
+    map (host: {
+      name = "legacy-${lib.replaceStrings [ "." ] [ "-" ] host}";
+      value = {
+        inherit host;
+        backend = legacyBackend;
+      };
+    }) legacyHosts
+  );
+in
+{
+  imports = [
+    (my.guest {
+      name = "reverse-proxy";
+      interior = {
+        modules.reverse-proxy = {
+          enable = true;
+          routes = config.modules.reverse-proxy.routes // legacyRoutes;
+        };
+      };
+    })
+  ];
+
+  config = lib.mkIf config.guests.reverse-proxy.enable {
+    guests.reverse-proxy = {
+      limits = {
+        memory = lib.mkDefault "1G";
+        cpu = lib.mkDefault "100%";
+        tasksMax = lib.mkDefault 256;
+      };
+    };
+  };
+}