feat: Added zen browser

Also disable seafile (very slow and can't upload any files from ios / ipados)

home/apps/zen.nix

@@ -0,0 +1,31 @@
+{
+  pkgs,
+  inputs,
+  ...
+}: {
+  imports = [
+    inputs.zen-browser.homeModules.beta
+  ];
+  programs.zen-browser = {
+    enable = true;
+    profiles.default = {
+      extensions.packages = with pkgs.nur.repos.rycee.firefox-addons; [
+        privacy-badger
+        violentmonkey
+        tridactyl
+        clearurls
+        onepassword-password-manager
+        ublock-origin
+        i-dont-care-about-cookies
+        keepa
+        sponsorblock
+      ];
+    };
+    policies = {
+      DisablePocket = true;
+      DisableTelemetry = true;
+      FeatureRecommendations = false;
+      SkipOnboarding = true;
+    };
+  };
+}