Add Discord Thread Action

[Kyrch]

We currently use a Discord Bot to create threads and notification embeds by SlashCommands, we want to migrate to Nova.

See the repository here.

To create Threads, we must create an Action in Resource Anime. For the creation of Embeds, it needs to be thought out because we may want to include several videos at once and we must say whether it is a new video or an update, I suggest an Action as well.

• [x] Add environment variable SUBMISSIONS_DISCORD_CHANNEL.
• [x] Define a new enum variable here, value 10092799.
• [x] Create new Action for creating Threads and add it to Resource Anime.
• [ ] Create new Action for creating Embeds and add it to Resource Video. This action can be defined for the table using the ->standalone() method.
• [ ] Assign create video permissions to actions.