New services and package updates

- Added support for open-webui and ollama-rocm in CLI packages.
- Updated desktop packages to include filezilla, audacity, and freecad.
- Expanded essentials with distrobox, dbus, cifs-utils, samba, and kdePackages.ksshaskpass.
- Introduced niri-waybar and niri-session-manager services for improved session management.
- Configured mako notifications with custom settings in the Niri environment.
- Adjusted hyprpaper settings and enabled additional wallpapers. (TODO on niri. Not working ATM)

niri/autostart.nix

@@ -0,0 +1,51 @@
+{ config, pkgs, username, project, ... }:
+{
+  
+#To show logs of services run: 
+#journalctl --user-unit={service-name} --user
+  systemd.user.services.niri-waybar = {
+    description = "Waybar status bar for Niri";
+    
+    # "wantedBy" replaces the [Install] section
+    wantedBy = [ "graphical-session.target" ];
+    
+    # "partOf" and "after" replace the [Unit] section dependencies
+    partOf = [ "graphical-session.target" ];
+    after = [ "graphical-session.target" ];
+
+    # [Unit] configuration goes here
+    unitConfig = {
+      # This checks the environment variable to ensure we are in Niri
+      ConditionEnvironment = "XDG_CURRENT_DESKTOP=niri";
+    };
+
+    # [Service] configuration goes here
+    serviceConfig = {
+      ExecStart = "${pkgs.waybar}/bin/waybar";
+      Restart = "on-failure";
+      RestartSec = "1s";
+    };
+  };
+
+  # 2. The Niri Session Cleanup Service
+  # This service starts when the graphical session starts, and when it stops,
+  # it forcibly stops the graphical-session.target to ensure a clean state for the next login.
+  systemd.user.services.niri-session-manager = {
+    description = "Niri Session Management";
+    wantedBy = [ "graphical-session.target" ];
+    partOf = [ "graphical-session.target" ];
+    
+    # Only run this cleanup logic for Niri
+    unitConfig.ConditionEnvironment = "XDG_CURRENT_DESKTOP=niri";
+
+    serviceConfig = {
+      Type = "simple";
+      # A dummy command that stays alive. 'sleep infinity' is low resource.
+      ExecStart = "${pkgs.coreutils}/bin/sleep infinity";
+      
+      # IMPORTANT: When this service stops (which happens when niri kills its children),
+      # it brings down the whole target.
+      ExecStopPost = "${pkgs.systemd}/bin/systemctl --user stop graphical-session.target";
+    };
+  };
+}