Update flake.lock, add plugins, and new bind

Bump several flake.lock entries to newer revisions. Enable the
color_picker, file-search, and nix-monitor plugins in Noctalia,
import the nix-monitor configuration, and add a SUPER‑CONTROL‑F
binding for file search while switching the color‑picker shortcut
to the new plugin.

modules/home/noctalia/settings/plugins/nix-monitor.nix

@@ -0,0 +1,8 @@
+{username, ...}: {
+  programs.noctalia.settings.plugin_settings."avivbintangaringga/nix-monitor" = {
+    branch = "nixos-unstable";
+    clean_command = "nh clean all";
+    show_update_check_notification = true;
+    update_command = "nix flake update --option access-tokens \"github.com=$(gh auth token)\" --flake /home/${username}/garandos";
+  };
+}