[feat] results: automatically set embedded stream url for video results

Currently, many engines that provide video results call the same
`get_embedded_stream_url` method for setting the `iframe_src`. There
is no value in that because this logic is engine-specific and probably
many video engines forgot to implement this.

With these changes, it's done automatically, so engine implementors
don't have to worry about setting an `iframe_src` (unless the engine
explicitly has a field for it).

0 files changed, 0 insertions, 0 deletions