Add waybar config

wm/waybar.nix

@@ -0,0 +1,31 @@
+{ pkgs, ... }:
+
+{
+  programs.waybar = {
+    enable = true;
+
+    settings.mainBar = {
+      layer = "top";
+      position = "top";
+      height = 30;
+
+      modules-left = [
+        "hyprland/workspaces"
+      ];
+
+      modules-right = [
+        "cpu"
+        "clock"
+      ];
+
+      cpu = {
+        format = "{usage}% ";
+        tooltip = false;
+      };
+
+      clock = {
+        tooltip = false;
+      };
+    };
+  };
+}