Support tg://settings(/folders)? link.

Telegram/SourceFiles/core/local_url_handlers.cpp

@@ -20,6 +20,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "boxes/share_box.h"
 #include "boxes/connection_box.h"
 #include "boxes/sticker_set_box.h"
+#include "boxes/sessions_box.h"
 #include "passport/passport_form_controller.h"
 #include "window/window_session_controller.h"
 #include "data/data_session.h"
@@ -27,6 +28,8 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "data/data_cloud_themes.h"
 #include "data/data_channel.h"
 #include "media/player/media_player_instance.h"
+#include "window/window_session_controller.h"
+#include "settings/settings_common.h"
 #include "mainwindow.h"
 #include "mainwidget.h"
 #include "main/main_session.h"
@@ -333,6 +336,29 @@ bool ResolvePrivatePost(
 	return true;
 }
 
+bool ResolveSettings(
+		Main::Session *session,
+		const Match &match,
+		const QVariant &context) {
+	const auto section = match->captured(1).mid(1).toLower();
+	if (!session) {
+		if (section.isEmpty()) {
+			App::wnd()->showSettings();
+			return true;
+		}
+		return false;
+	}
+	if (section == qstr("devices")) {
+		Ui::show(Box<SessionsBox>(session));
+		return true;
+	}
+	const auto type = (section == qstr("folders"))
+		? ::Settings::Type::Folders
+		: ::Settings::Type::Main;
+	App::wnd()->sessionController()->showSettings(type);
+	return true;
+}
+
 bool HandleUnknown(
 		Main::Session *session,
 		const Match &match,
@@ -454,6 +480,10 @@ const std::vector<LocalUrlHandler> &LocalUrlHandlers() {
 			qsl("^privatepost/?\\?(.+)(#|$)"),
 			ResolvePrivatePost
 		},
+		{
+			qsl("^settings(/folders|/devices)?$"),
+			ResolveSettings
+		},
 		{
 			qsl("^([^\\?]+)(\\?|#|$)"),
 			HandleUnknown