Add Seerr, remove JellySeerr & OverSeerr

### App Name

Seerr

### App Website / GitHub

https://github.com/seerr-team/seerr

### Docker Image

ghcr.io/seerr-team/seerr:latest

### App Description

Media Requester.  Jellyseerr and overseerr projects have merged and become seerr. 

### Category

Media (Streaming / Management)

### Additional Context

_No response_