refactor: reorganize chrony service configuration in locale settings

nixos/system/locale/default.nix

@@ -1,10 +1,7 @@
 { config, pkgs, ... }:
-
 {
   time.timeZone = "Europe/Istanbul";
-
   i18n.defaultLocale = "en_US.UTF-8";
-
   i18n.extraLocaleSettings = {
     LC_ADDRESS = "tr_TR.UTF-8";
     LC_IDENTIFICATION = "tr_TR.UTF-8";
@@ -17,8 +14,18 @@
     LC_TIME = "tr_TR.UTF-8";
   };
 
+  services.chrony = {
+    enable = true;
+    servers = [
+      "0.tr.pool.ntp.org"
+      "1.tr.pool.ntp.org"
+      "time.cloudflare.com"
+    ];
+    extraConfig = ''
+      makestep 1.0 3
+    '';
+  };
 
   console.keyMap = "trq";
-
   system.stateVersion = "25.05";
 }