This PR is extracted by AI from #3949 to support RTMPS server in SRS.
Run SRS with RTMPS support:
```bash
./objs/srs -c conf/rtmps.conf
```
Publish RTMPS stream by FFmpeg:
```bash
ffmpeg -re -i doc/source.flv -c copy -f flv rtmps://localhost:1443/live/livetream
```
Play RTMPS stream by ffplay:
```bash
ffplay rtmps://localhost:1443/live/livetream
```
Below work is done by AI:
* [AI: Extract RTMP transport for
RTMPS.](7948111464)
* [AI: Extract RTMPS
transport.](a669cbba89)
---------
Co-authored-by: john <hondaxiao@tencent.com>
Co-authored-by: OSSRS-AI <winlinam@gmail.com>
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