Extract a dwm profile module

I've made this a module as it imports configuration from `st` and
potentially others as I continue to refactor.

modules/profiles/dwm/default.nix

@@ -0,0 +1,50 @@
+{ pkgs, ... }:
+
+{
+  imports = [
+    ../../mixins/st.nix
+  ];
+
+  services = {
+    dwm-status = {
+      enable = true;
+
+      order = [
+        "audio"
+        "battery"
+        "network"
+        "time"
+      ];
+    };
+
+    xserver = {
+      displayManager.startx.enable = true;
+      windowManager.dwm.enable = true;
+    };
+  };
+
+  systemd.user.services.dwm-status.serviceConfig.Restart = "on-failure";
+
+  environment.systemPackages = with pkgs; [
+    dmenu
+    dmenu-bluetooth
+    dunst
+    networkmanager_dmenu
+    poweralertd
+    slock
+    xdotool
+    xwallpaper
+  ];
+
+  home-manager.users.opdavies =
+    { config, ... }:
+    {
+      home = {
+        file."${config.home.sessionVariables.XINITRC}".source = ./xinitrc;
+
+        sessionVariables = {
+          XINITRC = "${config.xdg.configHome}/X11/xinitrc";
+        };
+      };
+    };
+}

modules/profiles/dwm/xinitrc

@@ -0,0 +1,5 @@
+systemctl --user import-environment DISPLAY
+poweralertd -s &
+setbg &
+systemctl --user start dwm-status &
+exec dwm