Cannot download HLS or MPD streaming files

## Description

The download manager is currently unable to handle streaming URLs that use HLS (`.m3u8`) or MPEG-DASH (`.mpd`). When these types of URLs are added, the download either does not start, fails silently, or completes instantly without downloading the actual media segments.

## Steps to Reproduce

1. Open the app and attempt to add an HLS URL (e.g., `https://example.com/video/stream.m3u8`)
2. Or add an MPD URL (e.g., `https://example.com/video/manifest.mpd`)
3. Start the download
4. Observe the following behavior:
- The download does not start
- Or only the manifest file is downloaded
- Or the download finishes immediately without fetching media segments

## Expected Behavior

- The app should recognize HLS or DASH streaming URLs
- It should parse the `.m3u8` or `.mpd` manifest file
- It should download all associated media segments (e.g., `.ts` or `.m4s` files)
- It should optionally merge segments into a playable file

## Actual Behavior

- The `.m3u8` or `.mpd` file may be downloaded, but no media segments are fetched
- In some cases, the download appears to finish instantly
- No errors are shown to the user

## Environment

- **App Version**: [please specify]
- **Platform**: [Windows / Linux / macOS / Android]
- **Java/Kotlin Version**: [please specify]

## Additional Notes

- Other tools like `ffmpeg`, `yt-dlp`, or `IDM` can handle these URLs successfully
- Adding support for HLS and DASH streams would greatly improve the app’s ability to download modern video content

Would love to know if this feature is planned, or if you'd be open to contributions to help implement it.