make everything more modular + basic kitagawa config using gnome

hosts/nixos-vm/configs/zen-browser.nix

@@ -1,91 +0,0 @@
-{
-  pkgs,
-  inputs,
-  ...
-}: let
-  firefox-addons = with pkgs; inputs.firefox-addons.packages.${system};
-in {
-  programs.zen-browser = {
-    enable = true;
-    setAsDefaultBrowser = true;
-    nativeMessagingHosts = [
-      pkgs.firefoxpwa
-    ];
-    policies = {
-      AutofillAddressEnabled = false;
-      AutofillCreditCardEnabled = false;
-      DisableAppUpdate = true;
-      DisableFeedbackCommands = true;
-      DisableFirefoxStudies = true;
-      DisablePocket = true;
-      DisableTelemetry = true;
-      NoDefaultBookmarks = true;
-      OfferToSaveLogins = false;
-      EnableTrackingProtection = {
-        Value = true;
-        Locked = true;
-        Cryptomining = true;
-        Fingerprinting = true;
-      };
-      Preferences = {
-        "browser.startup.homepage" = {
-          Value = "about:blank";
-          Status = "locked";
-        };
-      };
-    };
-    profiles.default = {
-      settings = {
-        "zen.urlbar.behavior" = "float";
-        "zen.welcome-screen.seen" = true;
-      };
-      extensions.packages = with firefox-addons; [
-        adnauseam
-        bitwarden
-        indie-wiki-buddy
-        pwas-for-firefox
-      ];
-      search = {
-        force = true;
-        default = "ddg";
-        engines = {
-          nixpkgs = {
-            name = "nixpkgs packages";
-            urls = [
-              {
-                template = "https://search.nixos.org/packages?query={searchTerms}";
-              }
-            ];
-            icon = "https://wiki.nixos.org/favicon.ico";
-            definedAliases = ["@np"];
-          };
-          nixos-options = {
-            name = "NixOS options";
-            urls = [
-              {
-                template = "https://search.nixos.org/options?query={searchTerms}";
-              }
-            ];
-            icon = "https://wiki.nixos.org/favicon.ico";
-            definedAliases = ["@no"];
-          };
-          nixos-wiki = {
-            name = "NixOS Wiki";
-            urls = [
-              {
-                template = "https://wiki.nixos.org/w/index.php?search={searchTerms}";
-              }
-            ];
-            icon = "https://wiki.nixos.org/favicon.ico";
-            definedAliases = ["@nw"];
-          };
-        };
-      };
-      #keyboardShortcuts = [
-      #  {
-      #    id = "zen"
-      #  }
-      #];
-    };
-  };
-}