refactor: moved server module configs out of default.nix files

modules/nixos-modules/server/paperless/paperless.nix

@@ -0,0 +1,27 @@
+{
+  config,
+  lib,
+  ...
+}: {
+  options.services.paperless = {
+    database = {
+      user = lib.mkOption {
+        type = lib.types.str;
+        description = "what is the user and database that we are going to use for paperless";
+        default = "paperless";
+      };
+    };
+  };
+
+  config = lib.mkIf config.services.paperless.enable {
+    services.paperless = {
+      configureTika = true;
+      settings = {
+        PAPERLESS_DBENGINE = "postgresql";
+        PAPERLESS_DBHOST = "/run/postgresql";
+        PAPERLESS_DBNAME = config.services.paperless.database.user;
+        PAPERLESS_DBUSER = config.services.paperless.database.user;
+      };
+    };
+  };
+}