refactor(nix): extract common system configs into reusable modules

Create 6 new NixOS modules to reduce duplication across system configs:
- hardware/wooting: Wooting keyboard udev rules and Bluetooth compat
- services/nginx-base: Common nginx server settings
- services/acme-base: ACME certificate defaults
- services/xremap: Key remapping with sensible defaults
- system/no-sleep: Disable sleep/suspend/hibernate targets
- system/kernel-tweaks: PM freeze timeout and zram configuration

Update system configuration files to use these new modules.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

modules/nixos/services/xremap/default.nix

@@ -0,0 +1,44 @@
+{
+  config,
+  lib,
+  ...
+}:
+with lib;
+with lib.metacfg;
+let
+  cfg = config.metacfg.services.xremap;
+in
+{
+  options.metacfg.services.xremap = with types; {
+    enable = mkBoolOpt false "Whether or not to enable xremap key remapping.";
+    userName = mkOption {
+      type = types.str;
+      default = "harald";
+      description = "User to run xremap as.";
+    };
+    withGnome = mkBoolOpt true "Enable GNOME support.";
+    deviceNames = mkOption {
+      type = types.listOf types.str;
+      default = [ ];
+      description = "List of device names to remap.";
+    };
+    config = mkOption {
+      type = types.attrs;
+      default = { };
+      description = "Xremap configuration.";
+    };
+  };
+
+  config = {
+    services.xremap = {
+      enable = cfg.enable;
+      userName = mkIf cfg.enable cfg.userName;
+      serviceMode = mkIf cfg.enable "user";
+      withGnome = mkIf cfg.enable cfg.withGnome;
+      deviceNames = mkIf cfg.enable cfg.deviceNames;
+      config = mkIf cfg.enable cfg.config;
+    };
+
+    users.users.${cfg.userName}.extraGroups = mkIf cfg.enable [ "input" ];
+  };
+}