Implement Worker for Playlist Snapshot Comparison

[rafacovez]

Issue Description

Feature Request: Implement Worker for Playlist Snapshot Comparison

Problem Statement

The current code lacks a worker that compares the snapshot_id of playlists added to the notify_list table in the bot's database. This prevents the bot from automatically detecting changes in playlist snapshots and notifying users.

Proposed Solution

Implement a worker that runs periodically to check for differences in snapshot_id values. When a playlist's snapshot_id changes, the bot should send a notification to the user who added the playlist, including a clickable link to the playlist on Spotify.

Acceptance Criteria

• Periodic worker to compare snapshot_id of playlists in notify_list table
• Send notification to users when a playlist's snapshot_id changes
• Notification message includes playlist name as clickable link to Spotify
• Efficient implementation to avoid unnecessary resource consumption

Technical Considerations

• Implement worker as a separate component or module
• Use background task scheduler for periodic execution
• Handle errors and resilience (network/database)
• Utilize appropriate logging mechanisms

Additional Information

• notify_list table stores playlists added by users
• snapshot_id field in table stores playlist snapshot identifier
• Users expect notifications for playlist snapshot changes

Implementation Guidance

1. Modify code to store snapshot_id when adding playlists to notify_list table.
2. Implement periodic worker to compare stored snapshot_id with current snapshot from Spotify API.
3. Send notification to respective Telegram user when a difference is detected.
4. Handle errors and log worker execution.

Please let me know if you need further assistance or clarification.