Firefox: move kde specific settings to kde role

roles/kde/programs/firefox.nix

@@ -0,0 +1,25 @@
+{ config, pkgs, ... }:
+
+{
+	# KDE specific firefox settings
+	programs.firefox = {
+		policies = {
+			"Preferences" = {
+				# Make firefox use the kde file picker
+				"widget.use-xdg-desktop-portal.file-picker" = {
+					"Value" = 1;
+					"Status" = "default";
+				};
+				/*
+				https://wiki.archlinux.org/title/Firefox#KDE_integration tells me to enable this,
+				but strangely enough doing so makes firefox ask to be set as the default browser
+				every time you start it up, so I'll disable it
+				*/
+				"widget.use-xdg-desktop-portal.mime-handler" = {
+					"Value" = 0;
+					"Status" = "default";
+				};
+			};
+		};
+	};
+}