Combine startUrls and sendPaths

This commit allows to handle multiple URLs of all types as positional arguments simultaneously:
* tg:// links
* tonsite:// links
* interpret:// file paths
* generic file paths (to share files)

This allows to Drag'n'Drop files to the Telegram shortcut/binary.

Telegram/SourceFiles/mainwindow.cpp

@@ -215,7 +215,7 @@ void MainWindow::clearPasscodeLock() {
 		_main->show();
 		updateControlsGeometry();
 		_main->showAnimated(std::move(oldContentCache), true);
-		Core::App().checkStartUrl();
+		Core::App().checkStartUrls();
 	}
 }
 
@@ -285,7 +285,7 @@ void MainWindow::setupMain(
 		} else {
 			_main->activate();
 		}
-		Core::App().checkStartUrl();
+		Core::App().checkStartUrls();
 	}
 	fixOrder();
 	if (const auto strong = weakAnimatedLayer.get()) {