KemonoDownloader Files

feat: Overhaul CreatorDownloaderTab with async downloads and better error tracking Revamped CreatorDownloaderTab and CreatorDownloadThread to use async downloads, track failed files better, and log more details for debugging. - Added asyncio, aiohttp, ClientSession, and ClientTimeout imports for async downloads. - Switched CreatorDownloadThread to async with aiohttp for faster, smoother batch downloading. - Removed "Download All Links" checkbox to focus on manual post selection. - Added self.failed_files to CreatorDownloaderTab and CreatorDownloadThread to track failed files centrally. - Improved cleanup_thread: - Logs thread removal and failed file transfers. - Moves failed files from CreatorDownloadThread to self.failed_files. - Counts failed files in completion check. - Cleans up leftover threads with better error handling. - Logs failed files and active threads. - Updated update_file_completion: - Safely checks threads for failed file errors, defaults to "Unknown error". - Stores failed files in self.failed_files. - Adds success parameter to handle failures. - Triggers creator_download_finished when all files are done. - Enhanced CreatorDownloadThread: - Fetches creator names and post titles for better folder naming. - Logs detailed download progress and errors. - Added failed file summary in creator_download_finished for clearer feedback. - Made console logs clearer, no more cluttered tracebacks. - Remove trailing dots (Windows compatibility - sanitization for folder naming convention) for both Creator Downloader and Post Downloader.