feat: add bluetooth module

modules/nixos/hardware/bluetooth.nix

@@ -0,0 +1,25 @@
+{ config, lib, ... }:
+let
+  inherit (lib) mkEnableOption mkIf;
+
+  cfg = config.ataraxia.defaults.bluetooth;
+in
+{
+  options.ataraxia.defaults.bluetooth = {
+    enable = mkEnableOption "Default bluetooth settings";
+  };
+
+  config = mkIf cfg.enable {
+    services.blueman.enable = true;
+    hardware.bluetooth = {
+      enable = true;
+      settings = {
+        General = {
+          Experimental = true;
+        };
+      };
+    };
+
+    persist.state.directories = [ "/var/lib/bluetooth" ];
+  };
+}