[Feature]: Expose discord related information to the minecraft side

### 🚀 Description

Add the ability to use stuff like the Discord Nickname (or name) in Minecraft

Ref: https://github.com/hypherionmc/sdlink/issues/167#issuecomment-4504983755

### 💡 Use Case

_No response_

Start by reviewing the linked reference issue and comment to understand which Discord fields are requested and how they should appear on the Minecraft side. Then locate the Discord-to-Minecraft integration entry points; the work is done when the supported nickname or name data has defined behavior and is exposed consistently to Minecraft.

Written by the indexing model from the issue text.