Port the WebSocket bot functionality to an external standalone script that:
- Uses //MCCScript 1.0 format instead of being a built-in bot
- Uses System.Text.Json instead of Newtonsoft.Json (no external DLL)
- Serializes ItemType, EntityType, and other enums as string names
instead of numeric IDs (addresses #2805)
- Adds GetItemTypeMappings and GetEntityTypeMappings commands
- Accepts both string names and numeric IDs for enum parameters
- Uses 4096 byte WebSocket buffer for better message handling
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
