feat: Overseerr to Jellyseerr migration (#2019)

* feat: add Overseerr migration

* refactor: rename to Seerr

* refactor: more rename to Seerr

* feat: update the value of the MediaStatus.DELETED enum

* fix: add more details in migration logs

* fix: replace .update by .save for TypeORM hooks

* fix: add fake migration to skip the duplicated UpdateWebPush migration

* fix: rewrite the AddUserAvatarCacheFields migration for Overseerr merge

* fix: replace jellyseerr migrations with a dedicated one for overseerr

* fix: update overseerr migration

* fix: update overseerr migration

* fix: remove irrelevant changes

* fix: typos

* docs: update jsdoc comment

* docs: update seerr description

* docs: fix the contributing.md link

* fix: remove unwanterd change on postgres dev datasource

* docs: add latest tag to docker image

* fix: migrate old deleted status for 4k media

* fix: update Seerr version check

docs/using-seerr/notifications/pushbullet.md

@@ -0,0 +1,23 @@
+---
+title: Pushbullet
+description: Configure Pushbullet notifications.
+sidebar_position: 7
+---
+
+# Pushbullet
+
+:::info
+Users can optionally configure personal notifications in their user settings.
+
+User notifications are separate from system notifications, and the available notification types are dependent on user permissions.
+:::
+
+## Configuration
+
+### Access Token
+
+[Create an access token](https://www.pushbullet.com/#settings) and set it here to grant Seerr access to the Pushbullet API.
+
+### Channel Tag (optional)
+
+Optionally, [create a channel](https://www.pushbullet.com/my-channel) to allow other users to follow the notification feed using the specified channel tag.