Added "Stop Crawling" button
Added 2023-07-11 12:17:44 +0000 UTCStarting with version 15.9.0, when the user clicks the "Start Crawling" button, a "Stop Crawling" button will be displayed next to it.
Previously the downloader didn't have the function to stop crawling, although you can stop the crawling by refreshing the page, but some users didn't know this and wanted to look for the "stop crawling" button, so now I added this button.
