feat: add a firefox container

hosts/nb/users/dominik.nix

@@ -78,6 +78,7 @@ let
     "media.ffmpeg.vaapi.enabled" = true;
     "media.ffmpeg.vaapi-drm-display.enabled" = true;
     "gfx.webrender.all" = true;
+    "xpinstall.signatures.required" = false;
   };
 
   firefoxUserChrome = ''
@@ -531,7 +532,7 @@ in
 
     programs.firefox = {
       enable = true;
-      package = pkgs.firefox.overrideAttrs (a: {
+      package = pkgs.firefox-devedition.overrideAttrs (a: {
         postInstall = a.postInstall or "" + ''
           wrapProgram "$out/bin/firefox" \
             export MOZ_ENABLE_WAYLAND=1
@@ -558,6 +559,11 @@ in
               icon = "fingerprint";
               id = 1;
             };
+            "dating" = {
+              color = "pink";
+              icon = "circle";
+              id = 5;
+            };
             "cloonar technologies" = {
               color = "red";
               icon = "briefcase";