Added a feature that allows you to set the distribution thumbnail to any image.
You can also set a different thumbnail for each distribution, or automatically reuse the default thumbnail.
The default thumbnail can be set from "Feminine Power Up" in the broadcast settings on the broadcast slot management page.
If you want to set it for each broadcast, you can do so from the broadcast slot management page after acquiring the broadcast slot.
Thumbnail images can be specified as "JPEG, PNG" images with a size of less than "1920 x 1080" and a file size of less than "2MB".
If "default thumbnail" is set and no thumbnail is set for each delivery, the default thumbnail will be used.
If both thumbnails are not set, the captured image of the distribution will be used as before.
Thumbnails are used on the broadcast list screen (thumbnail mode), when posting a distribution URL to Twitter, and in the playback pop-up of the browser.
