Add support for Telegram Topics

[Flashky]

Description

Currently it is only possible to send Telegram notifications to user chats and group chats. However, there is a third kind of group chat: supergroups

Supergroups allow having multiple channels (or topics) inside the same group.

Other *arr apps such as Sonarr, Radarr or Readarr support Telegram notifications for supergroups topics.

Use case: I might have a group with multiple channels that might be used for different bots and people:

• A channel for Jellyseer requests notifications.
• A channel for for Radarr/Sonarr/Readarr notifications.
• A channel for health/status notifications.
• Other common channels for people to talk

How are topic messages sent:

Sending a notification to a supergroup is very similar to sending it to a group, using the sendMessage endpoint, it just requires one additional field on the payload:

• message_thread_id: Integer (Optional) Unique identifier for the target message thread (topic) of the forum; for forum supergroups only

Desired Behavior

In the Telegram notification setup section, I would like to have an additional optional field to set the Topic/Channel/Thread id (pick the desired name) just below the chat id field.

See Radarr/Sonarr Telegram notification setup as an example.

Additional Context

No response

Code of Conduct

• [X] I agree to follow Jellyseerr's Code of Conduct

[Fallenbagel]

sct/overseerr#3515

[D3LZ-D3LZ-D3LZ]

I would love to see this added too!