Support DMCloud.net

Initial support for Dailymotion Cloud platform.

Currently only HLS implemented, although almost every stream technology supported!

More info here: https://www.dmcloud.net/doc/api/api-streaming.html#streaming-protocols

Example URL (from Action24.gr): https://api.dmcloud.net/player/embed/52efc1ea94a6f6062e60ad33/52f014e506361d2fbfcaf470?auth=1706825743-0-2o6o85nh-f934dd72635591da64ef0fdbe704d738&preset=52efc3e894a6f607a8ca8f65&force_asset_name=mp4_h264_aac_hq&autoplay=1
Merge pull request #297 from athoik/dmcloud

Support DMCloud.net
Add plugin to extract dmcloud embeds.

Currently works only on action24.gr.
Merge remote-tracking branch 'upstream/develop' into develop