feat: refactor home-manager configs

modules/home-manager/firefox/firefox.nix

@@ -0,0 +1,47 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+let
+  cfg = config.feature.firefox;
+in
+{
+  options.feature.firefox = {
+    enable = lib.mkEnableOption "Set up firefox";
+  };
+
+  config = lib.mkIf cfg.enable {
+    programs.firefox = {
+      enable = true;
+
+      # Firefox is expected to be installed as a system package
+      package = null;
+
+      profiles.irl = {
+        extensions = {
+          force = true;
+          packages = with pkgs.nur.repos.rycee.firefox-addons; [
+            bitwarden
+            kagi-search
+            privacy-badger
+            recap
+          ];
+        };
+        settings = {
+          "browser.newtabpage.activity-stream.discoverystream.sendToPocket.enabled" = false;
+          "browser.newtabpage.activity-stream.feeds.section.topstories" = false;
+          "browser.newtabpage.activity-stream.showSponsored" = false;
+          "browser.newtabpage.activity-stream.showSponsoredCheckboxes" = false;
+          "browser.newtabpage.activity-stream.showSponsoredTopSites" = false;
+          "browser.search.suggest.enabled.private" = false;
+          "datareporting.policy.firstRunURL" = "https://irl.xyz/";
+          "extensions.autoDisableScope" = 0;
+          "extensions.pocket.enabled" = false;
+          "identity.fxaccounts.enabled" = false;
+        };
+      };
+    };
+  };
+}