Resolves Issue #1678.

This PR allows users to configure and broadcast their Likes and Dislikes to the Soulseek network.

Changes

• Added Likes and Dislikes string arrays to the SoulseekOptions configuration.
• Updated Application.cs to invoke SetInterestsAsync upon logging into the server.
• Added example configuration blocks to slskd.example.yml.

Dependency
This requires a new method in the Soulseek.NET library. I submitted the companion PR here: jpdillingham/Soulseek.NET#906. Please do not merge this until the Soulseek.NET PR is eventually merged and a new package version is published.

AI Disclosure

• Tool Used: Gemini 3 Pro
• How it was used: I do not really write C# natively, but use slskd heavily. I used AI as a "syntax translator" to help navigate the codebase, define some of the network commands, and generate the C# implementation for the logic I wanted.

I fully understand the code, compiled it locally, and have tested and deployed it on my own server. It works exactly like expected.