feat: refactored reverse proxy to be a normally named module

modules/nixos-modules/server/reverseProxy/impermanence.nix

@@ -0,0 +1,21 @@
+{
+  lib,
+  config,
+  ...
+}: let
+  dataDir = "/var/lib/acme";
+in {
+  config = lib.mkIf (config.host.impermanence.enable && config.services.reverseProxy.enable) {
+    environment.persistence."/persist/system/root" = {
+      enable = true;
+      hideMounts = true;
+      directories = [
+        {
+          directory = dataDir;
+          user = "acme";
+          group = "acme";
+        }
+      ];
+    };
+  };
+}