### Feature
HLS continuous mode: In this mode HLS sequence number is started from
where it stopped last time. Old fragments are kept. Default is on.
### Configuration
```
vhost __defaultVhost__ {
hls {
enabled on;
hls_path ./objs/nginx/html;
hls_fragment 10;
hls_window 60;
hls_continuous on;
}
}
```
Contributed by AI:
* [AI: Refine and extract HLS
recover.](656e4e296d)
---------
Co-authored-by: Haibo Chen <495810242@qq.com>
Co-authored-by: winlin <winlinvip@gmail.com>
Co-authored-by: OSSRS-AI <winlinam@gmail.com>
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